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class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2501.12611">arXiv:2501.12611</a> <span> [<a href="https://arxiv.org/pdf/2501.12611">pdf</a>, <a href="https://arxiv.org/format/2501.12611">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of the multiplicity dependence of $\mit违$ production ratios in $pp$ collisions at $\sqrt{s}=13$ TeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/nucl-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/nucl-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/nucl-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/nucl-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/nucl-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/nucl-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+K">K. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/nucl-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amalric%2C+R">R. Amalric</a>, <a href="/search/nucl-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/nucl-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/nucl-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1127 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2501.12611v2-abstract-short" style="display: inline;"> The $\mit违(\mathrm{2}S)$ and $\mit违(\mathrm{3}S)$ production cross-sections are measured relative to that of the $\mit违(\mathrm{1}S)$ meson, as a function of charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy of $13$ TeV. The measurement uses data collected by the LHCb experiment in 2018 corresponding to an integrated luminosity of 2 $\text{fb}^{-1}$. Both the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.12611v2-abstract-full').style.display = 'inline'; document.getElementById('2501.12611v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.12611v2-abstract-full" style="display: none;"> The $\mit违(\mathrm{2}S)$ and $\mit违(\mathrm{3}S)$ production cross-sections are measured relative to that of the $\mit违(\mathrm{1}S)$ meson, as a function of charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy of $13$ TeV. The measurement uses data collected by the LHCb experiment in 2018 corresponding to an integrated luminosity of 2 $\text{fb}^{-1}$. Both the $\mit违(\mathrm{2}S)$-to-$\mit违(\mathrm{1}S)$ and $\mit违(\mathrm{3}S)$-to-$\mit违(\mathrm{1}S)$ cross-section ratios are found to decrease significantly as a function of event multiplicity, with the $\mit违(\mathrm{3}S)$-to-$\mit违(\mathrm{1}S)$ ratio showing a steeper decline towards high multiplicity. This hierarchy is qualitatively consistent with the comover model predictions, indicating that final-state interactions play an important role in bottomonia production in high-multiplicity events. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.12611v2-abstract-full').style.display = 'none'; document.getElementById('2501.12611v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://lbfence.cern.ch/alcm/public/analysis/full-details/1782/ (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2024-038, CERN-EP-2024-318 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.09343">arXiv:2411.09343</a> <span> [<a href="https://arxiv.org/pdf/2411.09343">pdf</a>, <a href="https://arxiv.org/format/2411.09343">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of $蠁(1020)$ meson production in fixed-target $\textit{p}$Ne collisions at $\sqrt{s_{NN}}$ = 68.5 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/nucl-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/nucl-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/nucl-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/nucl-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/nucl-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/nucl-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+K">K. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/nucl-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amalric%2C+R">R. Amalric</a>, <a href="/search/nucl-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/nucl-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/nucl-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1127 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2411.09343v1-abstract-short" style="display: inline;"> The first measurement of $蠁(1020)$ meson production in fixed-target $p$Ne collisions at $\sqrt{s_{NN}}=68.5$ GeV is presented. The $蠁(1020)$ mesons are reconstructed in their $K^{+}K^{-}$ decay in a data sample consisting of proton collisions on neon nuclei at rest, corresponding to an integrated luminosity of $21.7 \pm 1.4$ nb$^{-1}$, collected by the LHCb detector at CERN. The $蠁(1020)$ producti… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.09343v1-abstract-full').style.display = 'inline'; document.getElementById('2411.09343v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.09343v1-abstract-full" style="display: none;"> The first measurement of $蠁(1020)$ meson production in fixed-target $p$Ne collisions at $\sqrt{s_{NN}}=68.5$ GeV is presented. The $蠁(1020)$ mesons are reconstructed in their $K^{+}K^{-}$ decay in a data sample consisting of proton collisions on neon nuclei at rest, corresponding to an integrated luminosity of $21.7 \pm 1.4$ nb$^{-1}$, collected by the LHCb detector at CERN. The $蠁(1020)$ production cross-section in the centre-of-mass rapidity range of $-1.8<y^*<0$ and transverse momentum range of $800<p_{T}<6500$ MeV/c is found to be $蟽=182.7\pm2.7~\text{(stat.)}\pm14.1~\text{(syst)}~渭$b/nucleon. A double-differential measurement of the cross-section is also provided in four regions of rapidity and six regions of transverse momentum of the $蠁(1020)$ meson and compared with the predictions from Pythia and EPOS4, which are found to underestimate the experimental values. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.09343v1-abstract-full').style.display = 'none'; document.getElementById('2411.09343v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://lbfence.cern.ch/alcm/public/analysis/full-details/3673/ (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2024-036, CERN-EP-2024-274 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.05669">arXiv:2411.05669</a> <span> [<a href="https://arxiv.org/pdf/2411.05669">pdf</a>, <a href="https://arxiv.org/format/2411.05669">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of the $蠄(2S)$ to $J/蠄$ cross-section ratio as a function of centrality in PbPb collisions at $\sqrt{s_{\text{NN}}}$ = 5.02 TeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/nucl-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/nucl-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/nucl-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/nucl-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/nucl-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/nucl-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+K">K. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/nucl-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amalric%2C+R">R. Amalric</a>, <a href="/search/nucl-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/nucl-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/nucl-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1128 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2411.05669v1-abstract-short" style="display: inline;"> The dissociation of quarkonium states with different binding energies produced in heavy-ion collisions is a powerful probe for investigating the formation and properties of the quark-gluon plasma. The ratio of production cross-sections of $蠄(2S)$ and $J/蠄$ mesons times the ratio of their branching fractions into the dimuon final state is measured as a function of centrality using data collected by… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.05669v1-abstract-full').style.display = 'inline'; document.getElementById('2411.05669v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.05669v1-abstract-full" style="display: none;"> The dissociation of quarkonium states with different binding energies produced in heavy-ion collisions is a powerful probe for investigating the formation and properties of the quark-gluon plasma. The ratio of production cross-sections of $蠄(2S)$ and $J/蠄$ mesons times the ratio of their branching fractions into the dimuon final state is measured as a function of centrality using data collected by the LHCb detector in PbPb collisions at $\sqrt{s_{\text{NN}}}$ = 5.02 TeV. The measured ratio shows no dependence on the collision centrality, and is compared to the latest theory predictions and to the recent measurements in literature. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.05669v1-abstract-full').style.display = 'none'; document.getElementById('2411.05669v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2024-041.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2024-272, LHCb-PAPER-2024-041 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.12756">arXiv:2409.12756</a> <span> [<a href="https://arxiv.org/pdf/2409.12756">pdf</a>, <a href="https://arxiv.org/format/2409.12756">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of elliptic flow of J$/蠄$ in $\sqrt{s_{_{NN}}}=200$ GeV Au$+$Au collisions at forward rapidity </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=PHENIX+Collaboration"> PHENIX Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Antsupov%2C+S">S. Antsupov</a>, <a href="/search/nucl-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayuso%2C+C">C. Ayuso</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannikov%2C+E">E. Bannikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/nucl-ex?searchtype=author&query=Beckman%2C+S">S. Beckman</a>, <a href="/search/nucl-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a> , et al. (344 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.12756v1-abstract-short" style="display: inline;"> We report the first measurement of the azimuthal anisotropy of J$/蠄$ at forward rapidity ($1.2<|畏|<2.2$) in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV at the Relativistic Heavy Ion Collider. The data were collected by the PHENIX experiment in 2014 and 2016 with integrated luminosity of 14.5~nb$^{-1}$. The second Fourier coefficient ($v_2$) of the azimuthal distribution of $J/蠄$ is determined… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.12756v1-abstract-full').style.display = 'inline'; document.getElementById('2409.12756v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.12756v1-abstract-full" style="display: none;"> We report the first measurement of the azimuthal anisotropy of J$/蠄$ at forward rapidity ($1.2<|畏|<2.2$) in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV at the Relativistic Heavy Ion Collider. The data were collected by the PHENIX experiment in 2014 and 2016 with integrated luminosity of 14.5~nb$^{-1}$. The second Fourier coefficient ($v_2$) of the azimuthal distribution of $J/蠄$ is determined as a function of the transverse momentum ($p_T$) using the event-plane method. The measurements were performed for several selections of collision centrality: 0\%--50\%, 10\%--60\%, and 10\%-40\%. We find that in all cases the values of $v_2(p_T)$, which quantify the elliptic flow of J$/蠄$, are consistent with zero. The results are consistent with measurements at midrapidity, indicating no significant elliptic flow of the J$/蠄$ within the quark-gluon-plasma medium at collision energies of $\sqrt{s_{_{NN}}}=200$ GeV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.12756v1-abstract-full').style.display = 'none'; document.getElementById('2409.12756v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">369 authors from 72 institutions, 12 pages, 7 figures, 5 tables. v1 is version submitted to Physical Review C. HEPdata tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.12715">arXiv:2409.12715</a> <span> [<a href="https://arxiv.org/pdf/2409.12715">pdf</a>, <a href="https://arxiv.org/format/2409.12715">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurements at forward rapidity of elliptic flow of charged hadrons and open-heavy-flavor muons in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=PHENIX+Collaboration"> PHENIX Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Antsupov%2C+S">S. Antsupov</a>, <a href="/search/nucl-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayuso%2C+C">C. Ayuso</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannikov%2C+E">E. Bannikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/nucl-ex?searchtype=author&query=Beckman%2C+S">S. Beckman</a>, <a href="/search/nucl-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a> , et al. (344 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.12715v1-abstract-short" style="display: inline;"> We present the first forward-rapidity measurements of elliptic anisotropy of open-heavy-flavor muons at the BNL Relativistic Heavy Ion Collider. The measurements are based on data samples of Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV collected by the PHENIX experiment in 2014 and 2016 with integrated luminosity of 14.5~nb$^{-1}$. The measurements are performed in the pseudorapidity range… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.12715v1-abstract-full').style.display = 'inline'; document.getElementById('2409.12715v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.12715v1-abstract-full" style="display: none;"> We present the first forward-rapidity measurements of elliptic anisotropy of open-heavy-flavor muons at the BNL Relativistic Heavy Ion Collider. The measurements are based on data samples of Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV collected by the PHENIX experiment in 2014 and 2016 with integrated luminosity of 14.5~nb$^{-1}$. The measurements are performed in the pseudorapidity range $1.2<|畏|<2$ and cover transverse momenta $1<p_T<4$~GeV/$c$. The elliptic flow of charged hadrons as a function of transverse momentum is also measured in the same kinematic range. We observe significant elliptic flow for both charged hadrons and heavy-flavor muons. The results show clear mass ordering of elliptic flow of light- and heavy-flavor particles. The magnitude of the measured $v_2$ is comparable to that in the midrapidity region. This indicates that there is no strong longitudinal dependence in the quark-gluon-plasma evolution between midrapidity and the rapidity range of this measurement at $\sqrt{s_{_{NN}}}=200$~GeV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.12715v1-abstract-full').style.display = 'none'; document.getElementById('2409.12715v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">369 authors from 72 institutions, 12 pages, 7 figures, 2 tables. v1 is version submitted to Physical Review C. HEPdata tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.11144">arXiv:2408.11144</a> <span> [<a href="https://arxiv.org/pdf/2408.11144">pdf</a>, <a href="https://arxiv.org/format/2408.11144">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of inclusive jet cross section and substructure in $p$$+$$p$ collisions at $\sqrt{s_{_{NN}}}=200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=PHENIX+Collaboration"> PHENIX Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Akimoto%2C+R">R. Akimoto</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+J">J. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Antsupov%2C+S">S. Antsupov</a>, <a href="/search/nucl-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/nucl-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+X">X. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannikov%2C+E">E. Bannikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a> , et al. (422 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2408.11144v1-abstract-short" style="display: inline;"> The jet cross-section and jet-substructure observables in $p$$+$$p$ collisions at $\sqrt{s}=200$ GeV were measured by the PHENIX Collaboration at the Relativistic Heavy Ion Collider (RHIC). Jets are reconstructed from charged-particle tracks and electromagnetic-calorimeter clusters using the anti-$k_{t}$ algorithm with a jet radius $R=0.3$ for jets with transverse momentum within $8.0<p_T<40.0$ Ge… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.11144v1-abstract-full').style.display = 'inline'; document.getElementById('2408.11144v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.11144v1-abstract-full" style="display: none;"> The jet cross-section and jet-substructure observables in $p$$+$$p$ collisions at $\sqrt{s}=200$ GeV were measured by the PHENIX Collaboration at the Relativistic Heavy Ion Collider (RHIC). Jets are reconstructed from charged-particle tracks and electromagnetic-calorimeter clusters using the anti-$k_{t}$ algorithm with a jet radius $R=0.3$ for jets with transverse momentum within $8.0<p_T<40.0$ GeV/$c$ and pseudorapidity $|畏|<0.15$. Measurements include the jet cross section, as well as distributions of SoftDrop-groomed momentum fraction ($z_g$), charged-particle transverse momentum with respect to jet axis ($j_T$), and radial distributions of charged particles within jets ($r$). Also meaureed was the distribution of $尉=-ln(z)$, where $z$ is the fraction of the jet momentum carried by the charged particle. The measurements are compared to theoretical next-to and next-to-next-to-leading-order calculatios, PYTHIA event generator, and to other existing experimental results. Indicated from these meaurements is a lower particle multiplicity in jets at RHIC energies when compared to models. Also noted are implications for future jet measurements with sPHENIX at RHIC as well as at the future Election-Ion Collider. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.11144v1-abstract-full').style.display = 'none'; document.getElementById('2408.11144v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">446 authors from 77 institutions, 11 pages, 8 figures. v1 is version submitted to Physical Review D. HEPdata tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.08586">arXiv:2407.08586</a> <span> [<a href="https://arxiv.org/pdf/2407.08586">pdf</a>, <a href="https://arxiv.org/format/2407.08586">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Centrality dependence of L茅vy-stable two-pion Bose-Einstein correlations in $\sqrt{s_{_{NN}}}=200$ GeV Au$+$Au collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=PHENIX+Collaboration"> PHENIX Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Akimoto%2C+R">R. Akimoto</a>, <a href="/search/nucl-ex?searchtype=author&query=Al-Ta%27ani%2C+H">H. Al-Ta'ani</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+J">J. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Angerami%2C+A">A. Angerami</a>, <a href="/search/nucl-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/nucl-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a> , et al. (377 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2407.08586v2-abstract-short" style="display: inline;"> The PHENIX experiment measured the centrality dependence of two-pion Bose-Einstein correlation functions in $\sqrt{s_{_{NN}}}=200$~GeV Au$+$Au collisions at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory. The data are well represented by L茅vy-stable source distributions. The extracted source parameters are the correlation-strength parameter $位$, the L茅vy index of stability… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.08586v2-abstract-full').style.display = 'inline'; document.getElementById('2407.08586v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.08586v2-abstract-full" style="display: none;"> The PHENIX experiment measured the centrality dependence of two-pion Bose-Einstein correlation functions in $\sqrt{s_{_{NN}}}=200$~GeV Au$+$Au collisions at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory. The data are well represented by L茅vy-stable source distributions. The extracted source parameters are the correlation-strength parameter $位$, the L茅vy index of stability $伪$, and the L茅vy-scale parameter $R$ as a function of transverse mass $m_T$ and centrality. The $位(m_T)$ parameter is constant at larger values of $m_T$, but decreases as $m_T$ decreases. The L茅vy scale parameter $R(m_T)$ decreases with $m_T$ and exhibits proportionality to the length scale of the nuclear overlap region. The L茅vy exponent $伪(m_T)$ is independent of $m_T$ within uncertainties in each investigated centrality bin, but shows a clear centrality dependence. At all centralities, the L茅vy exponent $伪$ is significantly different from that of Gaussian ($伪=2$) or Cauchy ($伪=1$) source distributions. Comparisons to the predictions of Monte-Carlo simulations of resonance-decay chains show that in all but the most peripheral centrality class (50%-60%), the obtained results are inconsistent with the measurements, unless a significant reduction of the in-medium mass of the $畏'$ meson is included. In each centrality class, the best value of the in-medium $畏'$ mass is compared to the mass of the $畏$ meson, as well as to several theoretical predictions that consider restoration of $U_A(1)$ symmetry in hot hadronic matter. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.08586v2-abstract-full').style.display = 'none'; document.getElementById('2407.08586v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">401 authors from 75 institutions, 23 pages, 15 figures, 2 tables. v2 is version accepted for publication by Physical Review C. HEPdata tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2406.11459">arXiv:2406.11459</a> <span> [<a href="https://arxiv.org/pdf/2406.11459">pdf</a>, <a href="https://arxiv.org/format/2406.11459">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2024.139032">10.1016/j.physletb.2024.139032 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of $J/蠄$ and $蠄\left(2S\right)$ production in $p+p$ and $p+d$ interactions at 120 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Leung%2C+C+H">C. H. Leung</a>, <a href="/search/nucl-ex?searchtype=author&query=Nagai%2C+K">K. Nagai</a>, <a href="/search/nucl-ex?searchtype=author&query=Nakano%2C+K">K. Nakano</a>, <a href="/search/nucl-ex?searchtype=author&query=Nawarathne%2C+D">D. Nawarathne</a>, <a href="/search/nucl-ex?searchtype=author&query=Dove%2C+J">J. Dove</a>, <a href="/search/nucl-ex?searchtype=author&query=Prasad%2C+S">S. Prasad</a>, <a href="/search/nucl-ex?searchtype=author&query=Wuerfel%2C+N">N. Wuerfel</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayuso%2C+C">C. Ayuso</a>, <a href="/search/nucl-ex?searchtype=author&query=Barker%2C+C+L">C. L. Barker</a>, <a href="/search/nucl-ex?searchtype=author&query=Brown%2C+C+N">C. N. Brown</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+W+C">W. C. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+A">A. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Christian%2C+D+C">D. C. Christian</a>, <a href="/search/nucl-ex?searchtype=author&query=Dannowitz%2C+B+P">B. P. Dannowitz</a>, <a href="/search/nucl-ex?searchtype=author&query=Daugherity%2C+M">M. Daugherity</a>, <a href="/search/nucl-ex?searchtype=author&query=Fassi%2C+L+E">L. El Fassi</a>, <a href="/search/nucl-ex?searchtype=author&query=Geesaman%2C+D+F">D. F. Geesaman</a>, <a href="/search/nucl-ex?searchtype=author&query=Gilman%2C+R">R. Gilman</a>, <a href="/search/nucl-ex?searchtype=author&query=Goto%2C+Y">Y. Goto</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+R">R. Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Hague%2C+T+J">T. J. Hague</a>, <a href="/search/nucl-ex?searchtype=author&query=Holt%2C+R+J">R. J. Holt</a>, <a href="/search/nucl-ex?searchtype=author&query=Hossain%2C+M+F">M. F. Hossain</a> , et al. (36 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2406.11459v3-abstract-short" style="display: inline;"> We report the $p+p$ and $p+d$ differential cross sections measured in the SeaQuest experiment for $J/蠄$ and $蠄\left(2S\right)$ production at 120 GeV beam energy covering the forward $x$-Feynman ($x_F$) range of $0.5 < x_F <0.9$. The measured cross sections are in good agreement with theoretical calculations based on the nonrelativistic QCD (NRQCD) using the long-distance matrix elements deduced fr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.11459v3-abstract-full').style.display = 'inline'; document.getElementById('2406.11459v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.11459v3-abstract-full" style="display: none;"> We report the $p+p$ and $p+d$ differential cross sections measured in the SeaQuest experiment for $J/蠄$ and $蠄\left(2S\right)$ production at 120 GeV beam energy covering the forward $x$-Feynman ($x_F$) range of $0.5 < x_F <0.9$. The measured cross sections are in good agreement with theoretical calculations based on the nonrelativistic QCD (NRQCD) using the long-distance matrix elements deduced from a recent global analysis of proton- and pion-induced charmonium production data. The $蟽_{蠄\left(2S\right)} / 蟽_{J/蠄}$ cross section ratios are found to increase as $x_F$ increases, indicating that the $q \bar{q}$ annihilation process has larger contributions in the $蠄\left(2S\right)$ production than the $J/蠄$ production. The $蟽_{pd}/2蟽_{pp}$ cross section ratios are observed to be significantly different for the Drell-Yan process and $J/蠄$ production, reflecting their different production mechanisms. We find that the $蟽_{pd}/2蟽_{pp}$ ratios for $J/蠄$ production at the forward $x_F$ region are sensitive to the $\bar{d}/ \bar{u}$ flavor asymmetry of the proton sea, analogous to the Drell-Yan process. The transverse momentum ($p_T$) distributions for $J/蠄$ and $蠄\left(2S\right)$ production are also presented and compared with data collected at higher center-of-mass energies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.11459v3-abstract-full').style.display = 'none'; document.getElementById('2406.11459v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 7 figures, with 1 page of supplementary material which has 2 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Lett. B 858, 139032 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2406.08301">arXiv:2406.08301</a> <span> [<a href="https://arxiv.org/pdf/2406.08301">pdf</a>, <a href="https://arxiv.org/format/2406.08301">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.110.044901">10.1103/PhysRevC.110.044901 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Jet modification via $蟺^0$-hadron correlations in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=PHENIX+Collaboration"> PHENIX Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/nucl-ex?searchtype=author&query=Afanasiev%2C+S">S. Afanasiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Al-Bataineh%2C+H">H. Al-Bataineh</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+J">J. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/nucl-ex?searchtype=author&query=Asai%2C+J">J. Asai</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/nucl-ex?searchtype=author&query=Averbeck%2C+R">R. Averbeck</a>, <a href="/search/nucl-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Baksay%2C+G">G. Baksay</a>, <a href="/search/nucl-ex?searchtype=author&query=Baksay%2C+L">L. Baksay</a>, <a href="/search/nucl-ex?searchtype=author&query=Baldisseri%2C+A">A. Baldisseri</a> , et al. (511 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2406.08301v2-abstract-short" style="display: inline;"> High-momentum two-particle correlations are a useful tool for studying jet-quenching effects in the quark-gluon plasma. Angular correlations between neutral-pion triggers and charged hadrons with transverse momenta in the range 4--12~GeV/$c$ and 0.5--7~GeV/$c$, respectively, have been measured by the PHENIX experiment in 2014 for Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$~GeV. Suppression is obs… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.08301v2-abstract-full').style.display = 'inline'; document.getElementById('2406.08301v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.08301v2-abstract-full" style="display: none;"> High-momentum two-particle correlations are a useful tool for studying jet-quenching effects in the quark-gluon plasma. Angular correlations between neutral-pion triggers and charged hadrons with transverse momenta in the range 4--12~GeV/$c$ and 0.5--7~GeV/$c$, respectively, have been measured by the PHENIX experiment in 2014 for Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$~GeV. Suppression is observed in the yield of high-momentum jet fragments opposite the trigger particle, which indicates jet suppression stemming from in-medium partonic energy loss, while enhancement is observed for low-momentum particles. The ratio and differences between the yield in Au$+$Au collisions and $p$$+$$p$ collisions, $I_{AA}$ and $螖_{AA}$, as a function of the trigger-hadron azimuthal separation, $螖蠁$, are measured for the first time at the Relativistic Heavy Ion Collider. These results better quantify how the yield of low-$p_T$ associated hadrons is enhanced at wide angle, which is crucial for studying energy loss as well as medium-response effects. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.08301v2-abstract-full').style.display = 'none'; document.getElementById('2406.08301v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">535 authors from 84 institutions, 12 pages, 8 figures. v2 is version accepted for publication in Physical Review C. HEPdata tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 110, 044901 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2402.14975">arXiv:2402.14975</a> <span> [<a href="https://arxiv.org/pdf/2402.14975">pdf</a>, <a href="https://arxiv.org/format/2402.14975">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.132.242301">10.1103/PhysRevLett.132.242301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Modification of $蠂_{c1}$(3872) and $蠄$(2$S$) production in $p$Pb collisions at $\sqrt{s_{NN}} = 8.16$ TeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/nucl-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/nucl-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/nucl-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/nucl-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/nucl-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+K">K. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/nucl-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amalric%2C+R">R. Amalric</a>, <a href="/search/nucl-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/nucl-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/nucl-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1082 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2402.14975v2-abstract-short" style="display: inline;"> The LHCb collaboration measures production of the exotic hadron $蠂_{c1}$(3872) in proton-nucleus collisions for the first time. Comparison with the charmonium state $蠄$(2$S$) suggests that the exotic $蠂_{c1}$(3872) experiences different dynamics in the nuclear medium than conventional hadrons, and comparison with data from proton-proton collisions indicates that the presence of the nucleus may mod… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.14975v2-abstract-full').style.display = 'inline'; document.getElementById('2402.14975v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2402.14975v2-abstract-full" style="display: none;"> The LHCb collaboration measures production of the exotic hadron $蠂_{c1}$(3872) in proton-nucleus collisions for the first time. Comparison with the charmonium state $蠄$(2$S$) suggests that the exotic $蠂_{c1}$(3872) experiences different dynamics in the nuclear medium than conventional hadrons, and comparison with data from proton-proton collisions indicates that the presence of the nucleus may modify $蠂_{c1}$(3872) production rates. This is the first measurement of the nuclear modification factor of an exotic hadron. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.14975v2-abstract-full').style.display = 'none'; document.getElementById('2402.14975v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2023-026.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2023-026, CERN-EP-2024-033 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 132 (2024) 242301 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2401.11342">arXiv:2401.11342</a> <span> [<a href="https://arxiv.org/pdf/2401.11342">pdf</a>, <a href="https://arxiv.org/format/2401.11342">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP04(2024)111">10.1007/JHEP04(2024)111 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Prompt and nonprompt $蠄(2S)$ production in $p$Pb collisions at $\sqrt{s_{NN}}=8.16$ TeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/nucl-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/nucl-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/nucl-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/nucl-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/nucl-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/nucl-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+K">K. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/nucl-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amalric%2C+R">R. Amalric</a>, <a href="/search/nucl-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/nucl-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a> , et al. (1079 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2401.11342v2-abstract-short" style="display: inline;"> The production of $蠄(2S)$ mesons in proton-lead collisions at a centre-of-mass energy per nucleon pair of $\sqrt{s_{NN}}=8.16$ TeV is studied with the LHCb detector using data corresponding to an integrated luminosity of 34 nb$^{-1}$. The prompt and nonprompt $蠄(2S)$ production cross-sections and the ratio of the $蠄(2S)$ to $J/蠄$ cross-section are measured as a function of the meson transverse mom… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.11342v2-abstract-full').style.display = 'inline'; document.getElementById('2401.11342v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2401.11342v2-abstract-full" style="display: none;"> The production of $蠄(2S)$ mesons in proton-lead collisions at a centre-of-mass energy per nucleon pair of $\sqrt{s_{NN}}=8.16$ TeV is studied with the LHCb detector using data corresponding to an integrated luminosity of 34 nb$^{-1}$. The prompt and nonprompt $蠄(2S)$ production cross-sections and the ratio of the $蠄(2S)$ to $J/蠄$ cross-section are measured as a function of the meson transverse momentum and rapidity in the nucleon-nucleon centre-of-mass frame, together with forward-to-backward ratios and nuclear modification factors. The production of prompt $蠄(2S)$ is observed to be more suppressed compared to $pp$ collisions than the prompt $J/蠄$ production, while the nonprompt productions have similar suppression factors. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.11342v2-abstract-full').style.display = 'none'; document.getElementById('2401.11342v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2023-024.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2023-024, CERN-EP-2023-293 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 04 (2024) 111 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2312.09827">arXiv:2312.09827</a> <span> [<a href="https://arxiv.org/pdf/2312.09827">pdf</a>, <a href="https://arxiv.org/format/2312.09827">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.109.054910">10.1103/PhysRevC.109.054910 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Identified charged-hadron production in $p$$+$Al, $^3$He$+$Au, and Cu$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV and in U$+$U collisions at $\sqrt{s_{_{NN}}}=193$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=PHENIX+Collaboration"> PHENIX Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Akimoto%2C+R">R. Akimoto</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+J">J. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/nucl-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+X">X. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Baublis%2C+V">V. Baublis</a> , et al. (456 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2312.09827v2-abstract-short" style="display: inline;"> The PHENIX experiment has performed a systematic study of identified charged-hadron ($蟺^\pm$, $K^\pm$, $p$, $\bar{p}$) production at midrapidity in $p$$+$Al, $^3$He$+$Au, Cu$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV and U$+$U collisions at $\sqrt{s_{_{NN}}}=193$ GeV. Identified charged-hadron invariant transverse-momentum ($p_T$) and transverse-mass ($m_T$) spectra are presented and interprete… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.09827v2-abstract-full').style.display = 'inline'; document.getElementById('2312.09827v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2312.09827v2-abstract-full" style="display: none;"> The PHENIX experiment has performed a systematic study of identified charged-hadron ($蟺^\pm$, $K^\pm$, $p$, $\bar{p}$) production at midrapidity in $p$$+$Al, $^3$He$+$Au, Cu$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV and U$+$U collisions at $\sqrt{s_{_{NN}}}=193$ GeV. Identified charged-hadron invariant transverse-momentum ($p_T$) and transverse-mass ($m_T$) spectra are presented and interpreted in terms of radially expanding thermalized systems. The particle ratios of $K/蟺$ and $p/蟺$ have been measured in different centrality ranges of large (Cu$+$Au, U$+$U) and small ($p$$+$Al, $^3$He$+$Au) collision systems. The values of $K/蟺$ ratios measured in all considered collision systems were found to be consistent with those measured in $p$$+$$p$ collisions. However the values of $p/蟺$ ratios measured in large collision systems reach the values of $\approx0.6$, which is $\approx2$ times larger than in $p$$+$$p$ collisions. These results can be qualitatively understood in terms of the baryon enhancement expected from hadronization by recombination. Identified charged-hadron nuclear-modification factors ($R_{AB}$) are also presented. Enhancement of proton $R_{AB}$ values over meson $R_{AB}$ values was observed in central $^3$He$+$Au, Cu$+$Au, and U$+$U collisions. The proton $R_{AB}$ values measured in $p$$+$Al collision system were found to be consistent with $R_{AB}$ values of $蠁$, $蟺^\pm$, $K^\pm$, and $蟺^0$ mesons, which may indicate that the size of the system produced in $p$$+$Al collisions is too small for recombination to cause a noticeable increase in proton production. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.09827v2-abstract-full').style.display = 'none'; document.getElementById('2312.09827v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">480 authors from 78 institutions, 18 pages, 6 tables, 16 figures. v2 is version accepted for publication in Physical Review C. HEPdata tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 109, 054910 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.09985">arXiv:2311.09985</a> <span> [<a href="https://arxiv.org/pdf/2311.09985">pdf</a>, <a href="https://arxiv.org/format/2311.09985">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.109.054908">10.1103/PhysRevC.109.054908 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of forward charged hadron flow harmonics in peripheral PbPb collisions at $\sqrt{s_{NN}}=5.02$ TeV with the LHCb detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/nucl-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/nucl-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/nucl-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/nucl-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/nucl-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+K">K. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/nucl-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amalric%2C+R">R. Amalric</a>, <a href="/search/nucl-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/nucl-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/nucl-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1079 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.09985v2-abstract-short" style="display: inline;"> Flow harmonic coefficients, $v_n$, which are the key to studying the hydrodynamics of the quark-gluon plasma (QGP) created in heavy-ion collisions, have been measured in various collision systems and kinematic regions and using various particle species. The study of flow harmonics in a wide pseudorapidity range is particularly valuable to understand the temperature dependence of the shear viscosit… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.09985v2-abstract-full').style.display = 'inline'; document.getElementById('2311.09985v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.09985v2-abstract-full" style="display: none;"> Flow harmonic coefficients, $v_n$, which are the key to studying the hydrodynamics of the quark-gluon plasma (QGP) created in heavy-ion collisions, have been measured in various collision systems and kinematic regions and using various particle species. The study of flow harmonics in a wide pseudorapidity range is particularly valuable to understand the temperature dependence of the shear viscosity to entropy density ratio of the QGP. This paper presents the first LHCb results of the second- and the third-order flow harmonic coefficients of charged hadrons as a function of transverse momentum in the forward region, corresponding to pseudorapidities between 2.0 and 4.9, using the data collected from PbPb collisions in 2018 at a center-of-mass energy of $5.02$ TeV. The coefficients measured using the two-particle angular correlation analysis method are smaller than the central-pseudorapidity measurements at ALICE and ATLAS from the same collision system but share similar features. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.09985v2-abstract-full').style.display = 'none'; document.getElementById('2311.09985v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2023-031.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2023-031, CERN-EP-2023-240 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 109 (2024) 054908 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.08490">arXiv:2311.08490</a> <span> [<a href="https://arxiv.org/pdf/2311.08490">pdf</a>, <a href="https://arxiv.org/format/2311.08490">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.110.L031105">10.1103/PhysRevD.110.L031105 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of strangeness enhancement with charmed mesons in high-multiplicity $p\mathrm{Pb}$ collisions at $\sqrt {s_{\mathrm{NN}}}=8.16\,$TeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/nucl-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/nucl-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/nucl-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/nucl-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/nucl-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/nucl-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+K">K. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/nucl-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amalric%2C+R">R. Amalric</a>, <a href="/search/nucl-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/nucl-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a> , et al. (1085 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.08490v2-abstract-short" style="display: inline;"> The production of prompt $D^+_{s}$ and $D^+$ mesons is measured by the LHCb experiment in proton-lead ($p\mathrm{Pb}$) collisions in both the forward ($1.5<y^*<4.0$) and backward ($-5.0<y^*<-2.5$) rapidity regions at a nucleon-nucleon center-of-mass energy of $\sqrt {s_{\mathrm{NN}}}=8.16\,$TeV. The nuclear modification factors of both $D^+_{s}$ and $D^+$ mesons are determined as a function of tra… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.08490v2-abstract-full').style.display = 'inline'; document.getElementById('2311.08490v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.08490v2-abstract-full" style="display: none;"> The production of prompt $D^+_{s}$ and $D^+$ mesons is measured by the LHCb experiment in proton-lead ($p\mathrm{Pb}$) collisions in both the forward ($1.5<y^*<4.0$) and backward ($-5.0<y^*<-2.5$) rapidity regions at a nucleon-nucleon center-of-mass energy of $\sqrt {s_{\mathrm{NN}}}=8.16\,$TeV. The nuclear modification factors of both $D^+_{s}$ and $D^+$ mesons are determined as a function of transverse momentum, $p_{\mathrm{T}}$, and rapidity. In addition, the $D^+_{s}$ to $D^+$ cross-section ratio is measured as a function of the charged particle multiplicity in the event. An enhanced $D^+_{s}$ to $D^+$ production in high-multiplicity events is observed for the whole measured $p_{\mathrm{T}}$ range, in particular at low $p_{\mathrm{T}}$ and backward rapidity, where the significance exceeds six standard deviations. This constitutes the first observation of strangeness enhancement in charm quark hadronization in high-multiplicity $p\mathrm{Pb}$ collisions. The results are also qualitatively consistent with the presence of quark coalescence as an additional charm quark hadronization mechanism in high-multiplicity proton-lead collisions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.08490v2-abstract-full').style.display = 'none'; document.getElementById('2311.08490v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2023-021.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2023-021, CERN-EP-2023-236 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 110, L031105 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.01562">arXiv:2311.01562</a> <span> [<a href="https://arxiv.org/pdf/2311.01562">pdf</a>, <a href="https://arxiv.org/format/2311.01562">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.132.102302">10.1103/PhysRevLett.132.102302 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Fraction of $蠂_c$ decays in prompt $J/蠄$ production measured in pPb collisions at $\sqrt{s_{NN}}=8.16$ TeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/nucl-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/nucl-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/nucl-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/nucl-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/nucl-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+K">K. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/nucl-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amalric%2C+R">R. Amalric</a>, <a href="/search/nucl-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/nucl-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/nucl-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1078 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.01562v1-abstract-short" style="display: inline;"> The fraction of $蠂_{c1}$ and $蠂_{c2}$ decays in the prompt $J/蠄$ yield, $F_{蠂c}=蟽_{蠂_c \to J/蠄}/蟽_{J/蠄}$, is measured by the LHCb detector in pPb collisions at $\sqrt{s_{NN}}=8.16$ TeV. The study covers the forward ($1.5<y^*<4.0$) and backward ($-5.0<y^*<-2.5$) rapidity regions, where $y^*$ is the $J/蠄$ rapidity in the nucleon-nucleon center-of-mass system. Forward and backward rapidity samples co… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.01562v1-abstract-full').style.display = 'inline'; document.getElementById('2311.01562v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.01562v1-abstract-full" style="display: none;"> The fraction of $蠂_{c1}$ and $蠂_{c2}$ decays in the prompt $J/蠄$ yield, $F_{蠂c}=蟽_{蠂_c \to J/蠄}/蟽_{J/蠄}$, is measured by the LHCb detector in pPb collisions at $\sqrt{s_{NN}}=8.16$ TeV. The study covers the forward ($1.5<y^*<4.0$) and backward ($-5.0<y^*<-2.5$) rapidity regions, where $y^*$ is the $J/蠄$ rapidity in the nucleon-nucleon center-of-mass system. Forward and backward rapidity samples correspond to integrated luminosities of 13.6 $\pm$ 0.3 nb$^{-1}$ and 20.8 $\pm$ 0.5 nb$^{-1}$, respectively. The result is presented as a function of the $J/蠄$ transverse momentum $p_{T,J/蠄}$ in the range 1$<p_{T, J/蠄}<20$ GeV/$c$. The $F_{蠂c}$ fraction at forward rapidity is compatible with the LHCb measurement performed in $pp$ collisions at $\sqrt{s}=7$ TeV, whereas the result at backward rapidity is 2.4 $蟽$ larger than in the forward region for $1<p_{T, J/蠄}<3$ GeV/$c$. The increase of $F_{蠂c}$ at low $p_{T, J/蠄}$ at backward rapidity is compatible with the suppression of the $蠄$(2S) contribution to the prompt $J/蠄$ yield. The lack of in-medium dissociation of $蠂_c$ states observed in this study sets an upper limit of 180 MeV on the free energy available in these pPb collisions to dissociate or inhibit charmonium state formation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.01562v1-abstract-full').style.display = 'none'; document.getElementById('2311.01562v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2023-028.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2023-028, CERN-EP-2023-224 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 132 (2024) 102302 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.17326">arXiv:2310.17326</a> <span> [<a href="https://arxiv.org/pdf/2310.17326">pdf</a>, <a href="https://arxiv.org/format/2310.17326">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.109.024907">10.1103/PhysRevC.109.024907 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Production of $畏$ and $畏'$ mesons in $pp$ and $p$Pb collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/nucl-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/nucl-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/nucl-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/nucl-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/nucl-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+K">K. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/nucl-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amalric%2C+R">R. Amalric</a>, <a href="/search/nucl-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/nucl-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/nucl-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1080 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2310.17326v2-abstract-short" style="display: inline;"> The production of $畏$ and $畏'$ mesons is studied in proton-proton and proton-lead collisions collected with the LHCb detector. Proton-proton collisions are studied at center-of-mass energies of $5.02$ and $13~{\rm TeV}$, and proton-lead collisions are studied at a center-of-mass energy per nucleon of $8.16~{\rm TeV}$. The studies are performed in center-of-mass rapidity regions… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.17326v2-abstract-full').style.display = 'inline'; document.getElementById('2310.17326v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.17326v2-abstract-full" style="display: none;"> The production of $畏$ and $畏'$ mesons is studied in proton-proton and proton-lead collisions collected with the LHCb detector. Proton-proton collisions are studied at center-of-mass energies of $5.02$ and $13~{\rm TeV}$, and proton-lead collisions are studied at a center-of-mass energy per nucleon of $8.16~{\rm TeV}$. The studies are performed in center-of-mass rapidity regions $2.5<y_{\rm c.m.}<3.5$ (forward rapidity) and $-4.0<y_{\rm c.m.}<-3.0$ (backward rapidity) defined relative to the proton beam direction. The $畏$ and $畏'$ production cross sections are measured differentially as a function of transverse momentum for $1.5<p_{\rm T}<10~{\rm GeV}$ and $3<p_{\rm T}<10~{\rm GeV}$, respectively. The differential cross sections are used to calculate nuclear modification factors. The nuclear modification factors for $畏$ and $畏'$ mesons agree at both forward and backward rapidity, showing no significant evidence of mass dependence. The differential cross sections of $畏$ mesons are also used to calculate $畏/蟺^0$ cross section ratios, which show evidence of a deviation from the world average. These studies offer new constraints on mass-dependent nuclear effects in heavy-ion collisions, as well as $畏$ and $畏'$ meson fragmentation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.17326v2-abstract-full').style.display = 'none'; document.getElementById('2310.17326v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/Publications/p/LHCb-PAPER-2023-030.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2023-030, CERN-EP-2023-228 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C109 (2024), 024907 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.14206">arXiv:2309.14206</a> <span> [<a href="https://arxiv.org/pdf/2309.14206">pdf</a>, <a href="https://arxiv.org/format/2309.14206">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP01(2024)070">10.1007/JHEP01(2024)070 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of prompt $D^+$ and $D^+_{s}$ production in $p\mathrm{Pb}$ collisions at $\sqrt {s_{\mathrm{NN}}}=5.02\,$TeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/nucl-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/nucl-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/nucl-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/nucl-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/nucl-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/nucl-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+K">K. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/nucl-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amalric%2C+R">R. Amalric</a>, <a href="/search/nucl-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/nucl-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a> , et al. (1039 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2309.14206v4-abstract-short" style="display: inline;"> The production of prompt $D^+$ and $D^+_{s}$ mesons is studied in proton-lead collisions at a centre-of-mass energy of $\sqrt {s_{\mathrm{NN}}}=5.02\,$TeV. The data sample corresponding to an integrated luminosity of $(1.58\pm0.02)\mathrm{nb}^{-1}$ is collected by the LHCb experiment at the LHC. The differential production cross-sections are measured using $D^+$ and $D^+_{s}$ candidates with trans… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.14206v4-abstract-full').style.display = 'inline'; document.getElementById('2309.14206v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.14206v4-abstract-full" style="display: none;"> The production of prompt $D^+$ and $D^+_{s}$ mesons is studied in proton-lead collisions at a centre-of-mass energy of $\sqrt {s_{\mathrm{NN}}}=5.02\,$TeV. The data sample corresponding to an integrated luminosity of $(1.58\pm0.02)\mathrm{nb}^{-1}$ is collected by the LHCb experiment at the LHC. The differential production cross-sections are measured using $D^+$ and $D^+_{s}$ candidates with transverse momentum in the range of $0<p_{\mathrm{T}} <14\,\mathrm{GeV}/c$ and rapidities in the ranges of $1.5<y^*<4.0$ and $-5.0<y^*<-2.5$ in the nucleon-nucleon centre-of-mass system. For both particles, the nuclear modification factor and the forward-backward production ratio are determined. These results are compared with theoretical models that include initial-state nuclear effects. In addition, measurements of the cross-section ratios between $D^+$, $D^+_{s}$ and $D^0$ mesons are presented, providing a baseline for studying the charm hadronization in lead-lead collisions at LHC energies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.14206v4-abstract-full').style.display = 'none'; document.getElementById('2309.14206v4-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2023-006.html (LHCb public pages). arXiv admin note: text overlap with arXiv:1707.02750</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2023-142, LHCb-PAPER-2023-006 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 01 (2024) 070 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2305.06711">arXiv:2305.06711</a> <span> [<a href="https://arxiv.org/pdf/2305.06711">pdf</a>, <a href="https://arxiv.org/format/2305.06711">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.109.044901">10.1103/PhysRevC.109.044901 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of $螢_{c}^{+}$ production in $p$Pb collisions at $\sqrt{s_{NN}}=8.16$ TeV at LHCb </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/nucl-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/nucl-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/nucl-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/nucl-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/nucl-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/nucl-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+K">K. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/nucl-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amalric%2C+R">R. Amalric</a>, <a href="/search/nucl-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/nucl-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a> , et al. (1040 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2305.06711v4-abstract-short" style="display: inline;"> A study of prompt $螢_{c}^{+}$ production in proton-lead collisions is performed with the LHCb experiment at a centre-of-mass energy per nucleon pair of 8.16 TeV in 2016 in $p$Pb and Pb$p$ collisions with an estimated integrated luminosity of approximately 12.5 and 17.4 nb$^{-1}$, respectively. The $螢_{c}^{+}$ production cross-section, as well as the $螢_{c}^{+}$ to $螞_{c}^{+}$ production cross-sect… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.06711v4-abstract-full').style.display = 'inline'; document.getElementById('2305.06711v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2305.06711v4-abstract-full" style="display: none;"> A study of prompt $螢_{c}^{+}$ production in proton-lead collisions is performed with the LHCb experiment at a centre-of-mass energy per nucleon pair of 8.16 TeV in 2016 in $p$Pb and Pb$p$ collisions with an estimated integrated luminosity of approximately 12.5 and 17.4 nb$^{-1}$, respectively. The $螢_{c}^{+}$ production cross-section, as well as the $螢_{c}^{+}$ to $螞_{c}^{+}$ production cross-section ratio, are measured as a function of the transverse momentum and rapidity and compared to latest theory predictions. The forward-backward asymmetry is also measured as a function of the $螢_{c}^{+}$ transverse momentum. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.06711v4-abstract-full').style.display = 'none'; document.getElementById('2305.06711v4-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-041.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2022-041, CERN-EP-2023-057 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physical Review C 109, 044901 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2303.12899">arXiv:2303.12899</a> <span> [<a href="https://arxiv.org/pdf/2303.12899">pdf</a>, <a href="https://arxiv.org/format/2303.12899">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.134.022302">10.1103/PhysRevLett.134.022302 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Disentangling centrality bias and final-state effects in the production of high-$p_T$ $蟺^0$ using direct $纬$ in $d$$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayuso%2C+C">C. Ayuso</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/nucl-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a>, <a href="/search/nucl-ex?searchtype=author&query=Blau%2C+D+S">D. S. Blau</a>, <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+M">M. Boer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bok%2C+J+S">J. S. Bok</a>, <a href="/search/nucl-ex?searchtype=author&query=Borisov%2C+V">V. Borisov</a>, <a href="/search/nucl-ex?searchtype=author&query=Brooks%2C+M+L">M. L. Brooks</a>, <a href="/search/nucl-ex?searchtype=author&query=Bryslawskyj%2C+J">J. Bryslawskyj</a>, <a href="/search/nucl-ex?searchtype=author&query=Bumazhnov%2C+V">V. Bumazhnov</a>, <a href="/search/nucl-ex?searchtype=author&query=Butler%2C+C">C. Butler</a> , et al. (253 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2303.12899v2-abstract-short" style="display: inline;"> PHENIX presents a simultaneous measurement of the production of direct $纬$ and $蟺^0$ in $d$$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV over a $p_T$ range of 7.5 to 18 GeV/$c$ for different event samples selected by event activity, i.e. charged-particle multiplicity detected at forward rapidity. Direct-photon yields are used to empirically estimate the contribution of hard-scattering processes i… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.12899v2-abstract-full').style.display = 'inline'; document.getElementById('2303.12899v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.12899v2-abstract-full" style="display: none;"> PHENIX presents a simultaneous measurement of the production of direct $纬$ and $蟺^0$ in $d$$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV over a $p_T$ range of 7.5 to 18 GeV/$c$ for different event samples selected by event activity, i.e. charged-particle multiplicity detected at forward rapidity. Direct-photon yields are used to empirically estimate the contribution of hard-scattering processes in the different event samples. Using this estimate, the average nuclear-modification factor $R_{d\rm Au,EXP}^{纬^{\rm dir}}$ is $0.925{\pm}0.023({\rm stat}){\pm}0.15^{\rm (scale)}$, consistent with unity for minimum-bias (MB) $d$$+$Au events. For event classes with moderate event activity, $R_{d\rm Au,EXP}^{纬^{\rm dir}}$ is consistent with the MB value within 5\% uncertainty. These results confirm that the previously observed enhancement of high-$p_T$ $蟺^0$ production found in small-system collisions with low event activity is a result of a bias in interpreting event activity within the Glauber framework. In contrast, for the top 5\% of events with the highest event activity, $R_{d\rm Au,EXP}^{纬^{\rm dir}}$ is suppressed by 20\% relative to the MB value with a significance of $4.5蟽$, which may be due to final-state effects. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.12899v2-abstract-full').style.display = 'none'; document.getElementById('2303.12899v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">279 authors from 69 institutions, 8 pages, 3 figures, v2 is version accepted for publication in Physical Review Letters. HEPdata tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 134, 022302 (2025) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2303.02579">arXiv:2303.02579</a> <span> [<a href="https://arxiv.org/pdf/2303.02579">pdf</a>, <a href="https://arxiv.org/format/2303.02579">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nuclphysa.2024.122874">10.1016/j.nuclphysa.2024.122874 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Present and Future of QCD </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Adhikari%2C+D">D. Adhikari</a>, <a href="/search/nucl-ex?searchtype=author&query=Afanasev%2C+A">A. Afanasev</a>, <a href="/search/nucl-ex?searchtype=author&query=Afzal%2C+F">F. Afzal</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Al-bataineh%2C+A">A. Al-bataineh</a>, <a href="/search/nucl-ex?searchtype=author&query=Almaalol%2C+D+K">D. K. Almaalol</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaryan%2C+M">M. Amaryan</a>, <a href="/search/nucl-ex?searchtype=author&query=Androi%C4%87%2C+D">D. Androi膰</a>, <a href="/search/nucl-ex?searchtype=author&query=Armstrong%2C+W+R">W. R. Armstrong</a>, <a href="/search/nucl-ex?searchtype=author&query=Arratia%2C+M">M. Arratia</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Asaturyan%2C+A">A. Asaturyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Atac%2C+H">H. Atac</a>, <a href="/search/nucl-ex?searchtype=author&query=Avakian%2C+H">H. Avakian</a>, <a href="/search/nucl-ex?searchtype=author&query=Averett%2C+T">T. Averett</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+X">X. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnea%2C+N">N. Barnea</a>, <a href="/search/nucl-ex?searchtype=author&query=Basar%2C+G">G. Basar</a>, <a href="/search/nucl-ex?searchtype=author&query=Battaglieri%2C+M">M. Battaglieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Baty%2C+A+A">A. A. Baty</a>, <a href="/search/nucl-ex?searchtype=author&query=Bautista%2C+I">I. Bautista</a> , et al. (378 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2303.02579v1-abstract-short" style="display: inline;"> This White Paper presents the community inputs and scientific conclusions from the Hot and Cold QCD Town Meeting that took place September 23-25, 2022 at MIT, as part of the Nuclear Science Advisory Committee (NSAC) 2023 Long Range Planning process. A total of 424 physicists registered for the meeting. The meeting highlighted progress in Quantum Chromodynamics (QCD) nuclear physics since the 2015… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.02579v1-abstract-full').style.display = 'inline'; document.getElementById('2303.02579v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.02579v1-abstract-full" style="display: none;"> This White Paper presents the community inputs and scientific conclusions from the Hot and Cold QCD Town Meeting that took place September 23-25, 2022 at MIT, as part of the Nuclear Science Advisory Committee (NSAC) 2023 Long Range Planning process. A total of 424 physicists registered for the meeting. The meeting highlighted progress in Quantum Chromodynamics (QCD) nuclear physics since the 2015 LRP (LRP15) and identified key questions and plausible paths to obtaining answers to those questions, defining priorities for our research over the coming decade. In defining the priority of outstanding physics opportunities for the future, both prospects for the short (~ 5 years) and longer term (5-10 years and beyond) are identified together with the facilities, personnel and other resources needed to maximize the discovery potential and maintain United States leadership in QCD physics worldwide. This White Paper is organized as follows: In the Executive Summary, we detail the Recommendations and Initiatives that were presented and discussed at the Town Meeting, and their supporting rationales. Section 2 highlights major progress and accomplishments of the past seven years. It is followed, in Section 3, by an overview of the physics opportunities for the immediate future, and in relation with the next QCD frontier: the EIC. Section 4 provides an overview of the physics motivations and goals associated with the EIC. Section 5 is devoted to the workforce development and support of diversity, equity and inclusion. This is followed by a dedicated section on computing in Section 6. Section 7 describes the national need for nuclear data science and the relevance to QCD research. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.02579v1-abstract-full').style.display = 'none'; document.getElementById('2303.02579v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">QCD Town Meeting White Paper, as submitted to 2023 NSAC LRP committee on Feb. 28, 2023</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Phys.A 1047 (2024) 122874 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2212.12160">arXiv:2212.12160</a> <span> [<a href="https://arxiv.org/pdf/2212.12160">pdf</a>, <a href="https://arxiv.org/format/2212.12160">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.108.035202">10.1103/PhysRevC.108.035202 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of flavor asymmetry of light-quark sea in the proton with Drell-Yan dimuon production in $p+p$ and $p+d$ collisions at 120 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Dove%2C+J">J. Dove</a>, <a href="/search/nucl-ex?searchtype=author&query=Kerns%2C+B">B. Kerns</a>, <a href="/search/nucl-ex?searchtype=author&query=Leung%2C+C">C. Leung</a>, <a href="/search/nucl-ex?searchtype=author&query=McClellan%2C+R+E">R. E. McClellan</a>, <a href="/search/nucl-ex?searchtype=author&query=Miyasaka%2C+S">S. Miyasaka</a>, <a href="/search/nucl-ex?searchtype=author&query=Morton%2C+D+H">D. H. Morton</a>, <a href="/search/nucl-ex?searchtype=author&query=Nagai%2C+K">K. Nagai</a>, <a href="/search/nucl-ex?searchtype=author&query=Prasad%2C+S">S. Prasad</a>, <a href="/search/nucl-ex?searchtype=author&query=Sanftl%2C+F">F. Sanftl</a>, <a href="/search/nucl-ex?searchtype=author&query=Scott%2C+M+B+C">M. B. C. Scott</a>, <a href="/search/nucl-ex?searchtype=author&query=Tadepalli%2C+A+S">A. S. Tadepalli</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayuso%2C+C">C. Ayuso</a>, <a href="/search/nucl-ex?searchtype=author&query=Barker%2C+C+T">C. T. Barker</a>, <a href="/search/nucl-ex?searchtype=author&query=Brown%2C+C+N">C. N. Brown</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+T+H">T. H. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+W+C">W. C. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+A">A. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Christian%2C+D+C">D. C. Christian</a>, <a href="/search/nucl-ex?searchtype=author&query=Dannowitz%2C+B+P">B. P. Dannowitz</a>, <a href="/search/nucl-ex?searchtype=author&query=Daugherity%2C+M">M. Daugherity</a>, <a href="/search/nucl-ex?searchtype=author&query=Diefenthaler%2C+M">M. Diefenthaler</a>, <a href="/search/nucl-ex?searchtype=author&query=Fassi%2C+L+E">L. El Fassi</a>, <a href="/search/nucl-ex?searchtype=author&query=Geesaman%2C+D+F">D. F. Geesaman</a> , et al. (44 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2212.12160v4-abstract-short" style="display: inline;"> Evidence for a flavor asymmetry between the $\bar u$ and $\bar d$ quark distributions in the proton has been found in deep-inelastic scattering and Drell-Yan experiments. The pronounced dependence of this flavor asymmetry on $x$ (fraction of nucleon momentum carried by partons) observed in the Fermilab E866 Drell-Yan experiment suggested a drop of the $\bar d\left(x\right) / \bar u\left(x\right)$… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.12160v4-abstract-full').style.display = 'inline'; document.getElementById('2212.12160v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2212.12160v4-abstract-full" style="display: none;"> Evidence for a flavor asymmetry between the $\bar u$ and $\bar d$ quark distributions in the proton has been found in deep-inelastic scattering and Drell-Yan experiments. The pronounced dependence of this flavor asymmetry on $x$ (fraction of nucleon momentum carried by partons) observed in the Fermilab E866 Drell-Yan experiment suggested a drop of the $\bar d\left(x\right) / \bar u\left(x\right)$ ratio in the $x > 0.15$ region. We report results from the SeaQuest Fermilab E906 experiment with improved statistical precision for $\bar d\left(x\right) / \bar u\left(x\right)$ in the large $x$ region up to $x=0.45$ using the 120 GeV proton beam. Two different methods for extracting the Drell-Yan cross section ratios, $蟽^{pd} /2 蟽^{pp}$, from the SeaQuest data give consistent results. The $\bar{d}\left(x\right) / \bar{u}\left(x\right)$ ratios and the $\bar d\left(x\right) - \bar u\left(x\right)$ differences are deduced from these cross section ratios for $0.13 < x < 0.45$. The SeaQuest and E866/NuSea $\bar{d}\left(x\right) / \bar{u}\left(x\right)$ ratios are in good agreement for the $x\lesssim 0.25$ region. The new SeaQuest data, however, show that $\bar d\left(x\right)$ continues to be greater than $\bar u\left(x\right)$ up to the highest $x$ value ($x = 0.45$). The new results on $\bar{d}\left(x\right) / \bar{u}\left(x\right)$ and $\bar{d}\left(x\right) - \bar{u}\left(x\right)$ are compared with various parton distribution functions and theoretical calculations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.12160v4-abstract-full').style.display = 'none'; document.getElementById('2212.12160v4-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 108, 035202 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2210.09048">arXiv:2210.09048</a> <span> [<a href="https://arxiv.org/pdf/2210.09048">pdf</a>, <a href="https://arxiv.org/format/2210.09048">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> ATHENA Detector Proposal -- A Totally Hermetic Electron Nucleus Apparatus proposed for IP6 at the Electron-Ion Collider </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=ATHENA+Collaboration"> ATHENA Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adam%2C+J">J. Adam</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Agrawal%2C+N">N. Agrawal</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Akers%2C+W">W. Akers</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+M">M. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Allen%2C+M+M">M. M. Allen</a>, <a href="/search/nucl-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/nucl-ex?searchtype=author&query=Angerami%2C+A">A. Angerami</a>, <a href="/search/nucl-ex?searchtype=author&query=Antonioli%2C+P">P. Antonioli</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N+J">N. J. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Aprahamian%2C+A">A. Aprahamian</a>, <a href="/search/nucl-ex?searchtype=author&query=Armstrong%2C+W">W. Armstrong</a>, <a href="/search/nucl-ex?searchtype=author&query=Arratia%2C+M">M. Arratia</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J+R">J. R. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Asaturyan%2C+A">A. Asaturyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Augsten%2C+K">K. Augsten</a>, <a href="/search/nucl-ex?searchtype=author&query=Aune%2C+S">S. Aune</a>, <a href="/search/nucl-ex?searchtype=author&query=Bailey%2C+K">K. Bailey</a>, <a href="/search/nucl-ex?searchtype=author&query=Baldanza%2C+C">C. Baldanza</a>, <a href="/search/nucl-ex?searchtype=author&query=Bansal%2C+M">M. Bansal</a>, <a href="/search/nucl-ex?searchtype=author&query=Barbosa%2C+F">F. Barbosa</a>, <a href="/search/nucl-ex?searchtype=author&query=Barion%2C+L">L. Barion</a> , et al. (415 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2210.09048v1-abstract-short" style="display: inline;"> ATHENA has been designed as a general purpose detector capable of delivering the full scientific scope of the Electron-Ion Collider. Careful technology choices provide fine tracking and momentum resolution, high performance electromagnetic and hadronic calorimetry, hadron identification over a wide kinematic range, and near-complete hermeticity. This article describes the detector design and its e… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.09048v1-abstract-full').style.display = 'inline'; document.getElementById('2210.09048v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2210.09048v1-abstract-full" style="display: none;"> ATHENA has been designed as a general purpose detector capable of delivering the full scientific scope of the Electron-Ion Collider. Careful technology choices provide fine tracking and momentum resolution, high performance electromagnetic and hadronic calorimetry, hadron identification over a wide kinematic range, and near-complete hermeticity. This article describes the detector design and its expected performance in the most relevant physics channels. It includes an evaluation of detector technology choices, the technical challenges to realizing the detector and the R&D required to meet those challenges. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.09048v1-abstract-full').style.display = 'none'; document.getElementById('2210.09048v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 17 (2022) 10, P10019 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2207.10745">arXiv:2207.10745</a> <span> [<a href="https://arxiv.org/pdf/2207.10745">pdf</a>, <a href="https://arxiv.org/format/2207.10745">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.107.014907">10.1103/PhysRevC.107.014907 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of $蠁$-meson production in Cu$+$Au at $\sqrt{s_{_{NN}}}=200$ GeV and U$+$U at $\sqrt{s_{_{NN}}}=193$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Akimoto%2C+R">R. Akimoto</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+J">J. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Alibordi%2C+M">M. Alibordi</a>, <a href="/search/nucl-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/nucl-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+X">X. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Baublis%2C+V">V. Baublis</a>, <a href="/search/nucl-ex?searchtype=author&query=Baumann%2C+C">C. Baumann</a>, <a href="/search/nucl-ex?searchtype=author&query=Baumgart%2C+S">S. Baumgart</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a> , et al. (387 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2207.10745v2-abstract-short" style="display: inline;"> The PHENIX experiment reports systematic measurements at the Relativistic Heavy Ion Collider of $蠁$-meson production in asymmetric Cu$+$Au collisions at $\sqrt{s_{_{NN}}}$=200 GeV and in U$+$U collisions at $\sqrt{s_{_{NN}}}$=193 GeV. Measurements were performed via the $蠁\rightarrow K^{+}K^{-}$ decay channel at midrapidity $|畏|<0.35$. Features of $蠁$-meson production measured in Cu$+$Cu, Cu$+$Au,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.10745v2-abstract-full').style.display = 'inline'; document.getElementById('2207.10745v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2207.10745v2-abstract-full" style="display: none;"> The PHENIX experiment reports systematic measurements at the Relativistic Heavy Ion Collider of $蠁$-meson production in asymmetric Cu$+$Au collisions at $\sqrt{s_{_{NN}}}$=200 GeV and in U$+$U collisions at $\sqrt{s_{_{NN}}}$=193 GeV. Measurements were performed via the $蠁\rightarrow K^{+}K^{-}$ decay channel at midrapidity $|畏|<0.35$. Features of $蠁$-meson production measured in Cu$+$Cu, Cu$+$Au, Au$+$Au, and U$+$U collisions were found to not depend on the collision geometry, which was expected because the yields are averaged over the azimuthal angle and follow the expected scaling with nuclear-overlap size. The elliptic flow of the $蠁$ meson in Cu$+$Au, Au$+$Au, and U$+$U collisions scales with second-order-participant eccentricity and the length scale of the nuclear-overlap region (estimated with the number of participating nucleons). At moderate $p_T$, $蠁$-meson production measured in Cu$+$Au and U$+$U collisions is consistent with coalescence-model predictions, whereas at high $p_T$ the production is in agreement with expectations for in-medium energy loss of parent partons prior to their fragmentation. The elliptic flow for $蠁$ mesons measured in Cu$+$Au and U$+$U collisions is well described by a (2+1)D viscous-hydrodynamic model with specific-shear viscosity $畏/s=1/4蟺$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.10745v2-abstract-full').style.display = 'none'; document.getElementById('2207.10745v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 January, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 July, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">412 authors from 76 institutions, 16 pages, 12 figures, 9 tables, 2012 data. v2 is version accepted for publication by Physical Review C. HEPdata for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 107, 014907 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2204.10608">arXiv:2204.10608</a> <span> [<a href="https://arxiv.org/pdf/2204.10608">pdf</a>, <a href="https://arxiv.org/format/2204.10608">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.131.042302">10.1103/PhysRevLett.131.042302 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Nuclear modification factor of neutral pions in the forward and backward regions in $p$-Pb collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/nucl-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/nucl-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/nucl-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/nucl-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/nucl-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+K">K. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/nucl-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/nucl-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/nucl-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+L">L. An</a> , et al. (988 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2204.10608v2-abstract-short" style="display: inline;"> The nuclear modification factor of neutral pions is measured in proton-lead collisions collected at a center-of-mass energy per nucleon of $8.16~{\rm TeV}$ with the LHCb detector. The $蟺^0$ production cross section is measured differentially in transverse momentum ($p_{\rm T}$) for $1.5<p_{\rm T}<10.0~{\rm GeV}$ and in center-of-mass pseudorapidity ($畏_{\rm c.m.}$) regions $2.5<畏_{\rm c.m.}<3.5$ (… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2204.10608v2-abstract-full').style.display = 'inline'; document.getElementById('2204.10608v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2204.10608v2-abstract-full" style="display: none;"> The nuclear modification factor of neutral pions is measured in proton-lead collisions collected at a center-of-mass energy per nucleon of $8.16~{\rm TeV}$ with the LHCb detector. The $蟺^0$ production cross section is measured differentially in transverse momentum ($p_{\rm T}$) for $1.5<p_{\rm T}<10.0~{\rm GeV}$ and in center-of-mass pseudorapidity ($畏_{\rm c.m.}$) regions $2.5<畏_{\rm c.m.}<3.5$ (forward) and $-4.0<畏_{\rm c.m.}<-3.0$ (backward) defined relative to the proton beam direction. The forward measurement shows a sizable suppression of $蟺^0$ production, while the backward measurement shows the first evidence of $蟺^0$ enhancement in proton-lead collisions at the LHC. Together, these measurements provide precise constraints on models of nuclear structure and particle production in high-energy nuclear collisions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2204.10608v2-abstract-full').style.display = 'none'; document.getElementById('2204.10608v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 July, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 April, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2021-053.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2021-053, CERN-EP-2022-050 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 131 (2023) 042302 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.17187">arXiv:2203.17187</a> <span> [<a href="https://arxiv.org/pdf/2203.17187">pdf</a>, <a href="https://arxiv.org/format/2203.17187">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.109.044912">10.1103/PhysRevC.109.044912 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Nonprompt direct-photon production in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U+A">U. A. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/nucl-ex?searchtype=author&query=Beckman%2C+S">S. Beckman</a>, <a href="/search/nucl-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/nucl-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a>, <a href="/search/nucl-ex?searchtype=author&query=Blau%2C+D+S">D. S. Blau</a>, <a href="/search/nucl-ex?searchtype=author&query=Bok%2C+J+S">J. S. Bok</a> , et al. (311 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2203.17187v2-abstract-short" style="display: inline;"> The measurement of the direct-photon spectrum from Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV is presented by the PHENIX collaboration using the external-photon-conversion technique for 0\%--93\% central collisions in a transverse-momentum ($p_T$) range of 0.8--10 GeV/$c$. An excess of direct photons, above prompt-photon production from hard-scattering processes, is observed for $p_T<6$ GeV/… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.17187v2-abstract-full').style.display = 'inline'; document.getElementById('2203.17187v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.17187v2-abstract-full" style="display: none;"> The measurement of the direct-photon spectrum from Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV is presented by the PHENIX collaboration using the external-photon-conversion technique for 0\%--93\% central collisions in a transverse-momentum ($p_T$) range of 0.8--10 GeV/$c$. An excess of direct photons, above prompt-photon production from hard-scattering processes, is observed for $p_T<6$ GeV/$c$. Nonprompt direct photons are measured by subtracting the prompt component, which is estimated as $N_{\rm coll}$-scaled direct photons from $p$$+$$p$ collisions at 200 GeV, from the direct-photon spectrum. Results are obtained for $0.8<p_T<6.0$ GeV/$c$ and suggest that the spectrum has an increasing inverse slope from ${\approx}0.2$ to 0.4 GeV/$c$ with increasing $p_T$, which indicates a possible sensitivity of the measurement to photons from earlier stages of the evolution of the collision. In addition, like the direct-photon production, the $p_T$-integrated nonprompt direct-photon yields also follow a power-law scaling behavior as a function of collision-system size. The exponent, $伪$, for the nonprompt component is found to be consistent with 1.1 with no apparent $p_T$ dependence. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.17187v2-abstract-full').style.display = 'none'; document.getElementById('2203.17187v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 31 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">336 authors from 71 institutions, 26 pages, 30 figures, 4 tabels, 2014 data. v2 is version accepted for publication in Physical Review C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 109, 044912 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.17058">arXiv:2203.17058</a> <span> [<a href="https://arxiv.org/pdf/2203.17058">pdf</a>, <a href="https://arxiv.org/format/2203.17058">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.109.044907">10.1103/PhysRevC.109.044907 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Charm- and Bottom-Quark Production in Au$+$Au Collisions at $\sqrt{s_{_{NN}}}$ = 200 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=PHENIX+Collaboration"> PHENIX Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/nucl-ex?searchtype=author&query=Beckman%2C+S">S. Beckman</a>, <a href="/search/nucl-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/nucl-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a> , et al. (321 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2203.17058v2-abstract-short" style="display: inline;"> The invariant yield of electrons from open-heavy-flavor decays for $1<p_T<8$ GeV/$c$ at midrapidity $|y|<0.35$ in Au$+$Au collisions at $\sqrt{s_{_{NN}}}$ = 200 GeV has been measured by the PHENIX experiment at the Relativistic Heavy Ion Collider. A displaced-vertex analysis with the PHENIX silicon-vertex detector enables extraction of the fraction of charm and bottom hadron decays and unfolding o… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.17058v2-abstract-full').style.display = 'inline'; document.getElementById('2203.17058v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.17058v2-abstract-full" style="display: none;"> The invariant yield of electrons from open-heavy-flavor decays for $1<p_T<8$ GeV/$c$ at midrapidity $|y|<0.35$ in Au$+$Au collisions at $\sqrt{s_{_{NN}}}$ = 200 GeV has been measured by the PHENIX experiment at the Relativistic Heavy Ion Collider. A displaced-vertex analysis with the PHENIX silicon-vertex detector enables extraction of the fraction of charm and bottom hadron decays and unfolding of the invariant yield of parent charm and bottom hadrons. The nuclear-modification factors $R_{AA}$ for electrons from charm and bottom hadron decays and heavy-flavor hadrons show both a centrality and a quark-mass dependence, indicating suppression in the quark-gluon plasma produced in these collisions that is medium sized and quark-mass dependent. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.17058v2-abstract-full').style.display = 'none'; document.getElementById('2203.17058v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 31 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">345 authors from 72 institutions, 16 pages, 18 figures, 2014 data. v2 is version accepted for publication in Physical Review C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 109, 044907 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.12354">arXiv:2203.12354</a> <span> [<a href="https://arxiv.org/pdf/2203.12354">pdf</a>, <a href="https://arxiv.org/format/2203.12354">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.107.024914">10.1103/PhysRevC.107.024914 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Low-$p_T$ direct-photon production in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=39$ and 62.4 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Akimoto%2C+R">R. Akimoto</a>, <a href="/search/nucl-ex?searchtype=author&query=Al-Ta%27ani%2C+H">H. Al-Ta'ani</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+J">J. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Angerami%2C+A">A. Angerami</a>, <a href="/search/nucl-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/nucl-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a> , et al. (409 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2203.12354v2-abstract-short" style="display: inline;"> The measurement of direct photons from Au$+$Au collisions at $\sqrt{s_{_{NN}}}=39$ and 62.4 GeV in the transverse-momentum range $0.4<p_T<3$ Gev/$c$ is presented by the PHENIX collaboration at the Relativistic Heavy Ion Collider. A significant direct-photon yield is observed in both collision systems. A universal scaling is observed when the direct-photon $p_T$ spectra for different center-of-mass… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.12354v2-abstract-full').style.display = 'inline'; document.getElementById('2203.12354v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.12354v2-abstract-full" style="display: none;"> The measurement of direct photons from Au$+$Au collisions at $\sqrt{s_{_{NN}}}=39$ and 62.4 GeV in the transverse-momentum range $0.4<p_T<3$ Gev/$c$ is presented by the PHENIX collaboration at the Relativistic Heavy Ion Collider. A significant direct-photon yield is observed in both collision systems. A universal scaling is observed when the direct-photon $p_T$ spectra for different center-of-mass energies and for different centrality selections at $\sqrt{s_{_{NN}}}=62.4$ GeV is scaled with $(dN_{\rm ch}/d畏)^伪$ for $伪=1.21{\pm}0.04$. This scaling also holds true for direct-photon spectra from Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV measured earlier by PHENIX, as well as the spectra from Pb$+$Pb at $\sqrt{s_{_{NN}}}=2760$ GeV published by ALICE. The scaling power $伪$ seems to be independent of $p_T$, center of mass energy, and collision centrality. The spectra from different collision energies have a similar shape up to $p_T$ of 2 GeV/$c$. The spectra have a local inverse slope $T_{\rm eff}$ increasing with $p_T$ of $0.174\pm0.018$ GeV/$c$ in the range $0.4<p_T<1.3$ GeV/$c$ and increasing to $0.289\pm0.024$ GeV/$c$ for $0.9<p_T<2.1$ GeV/$c$. The observed similarity of low-$p_T$ direct-photon production from $\sqrt{s_{_{NN}}}= 39$ to 2760 GeV suggests a common source of direct photons for the different collision energies and event centrality selections, and suggests a comparable space-time evolution of direct-photon emission. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.12354v2-abstract-full').style.display = 'none'; document.getElementById('2203.12354v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">434 authors from 78 institutions, 19 pages, 16 figures, 4 tables. v2 is version accepted for publication in Physical Review C as an Editor's Suggestion. HEPdata tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 107, 024914 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.09894">arXiv:2203.09894</a> <span> [<a href="https://arxiv.org/pdf/2203.09894">pdf</a>, <a href="https://arxiv.org/format/2203.09894">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.107.024907">10.1103/PhysRevC.107.024907 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurements of second-harmonic Fourier coefficients from azimuthal anisotropies in $p$$+$$p$, $p$$+$Au, $d$$+$Au, and $^3$He$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayuso%2C+C">C. Ayuso</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/nucl-ex?searchtype=author&query=Beckman%2C+S">S. Beckman</a>, <a href="/search/nucl-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a> , et al. (368 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2203.09894v2-abstract-short" style="display: inline;"> Recently, the PHENIX Collaboration has published second- and third-harmonic Fourier coefficients $v_2$ and $v_3$ for midrapidity ($|畏|<0.35$) charged hadrons in 0\%--5\% central $p$$+$Au, $d$$+$Au, and $^3$He$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV utilizing three sets of two-particle correlations for two detector combinations with different pseudorapidity acceptance [Phys. Rev. C {\bf 105},… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.09894v2-abstract-full').style.display = 'inline'; document.getElementById('2203.09894v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.09894v2-abstract-full" style="display: none;"> Recently, the PHENIX Collaboration has published second- and third-harmonic Fourier coefficients $v_2$ and $v_3$ for midrapidity ($|畏|<0.35$) charged hadrons in 0\%--5\% central $p$$+$Au, $d$$+$Au, and $^3$He$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV utilizing three sets of two-particle correlations for two detector combinations with different pseudorapidity acceptance [Phys. Rev. C {\bf 105}, 024901 (2022)]. This paper extends these measurements of $v_2$ to all centralities in $p$$+$Au, $d$$+$Au, and $^3$He$+$Au collisions, as well as $p$$+$$p$ collisions, as a function of transverse momentum ($p_T$) and event multiplicity. The kinematic dependence of $v_2$ is quantified as the ratio $R$ of $v_2$ between the two detector combinations as a function of event multiplicity for $0.5$$<$$p_T$$<$$1$ and $2$$<$$p_T$$<$$2.5$ GeV/$c$. A multiphase-transport (AMPT) model can reproduce the observed $v_2$ in most-central to midcentral $d$$+$Au and $^3$He$+$Au collisions. However, the AMPT model systematically overestimates the measurements in $p$$+$$p$, $p$$+$Au, and peripheral $d$$+$Au and $^3$He$+$Au collisions, indicating a higher nonflow contribution in AMPT than in the experimental data. The AMPT model fails to describe the observed $R$ for $0.5$$<$$p_T$$<$$1$ GeV/$c$, but there is qualitative agreement with the measurements for $2$$<$$p_T$$<$$2.5$ GeV/$c$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.09894v2-abstract-full').style.display = 'none'; document.getElementById('2203.09894v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">393 authors from 72 institutions, 14 pages, 10 figures, 2014, 2015, and 2016 data. v2 is version accepted for publication in Physical Review C. HEPdata tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 107, 024907 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.06087">arXiv:2203.06087</a> <span> [<a href="https://arxiv.org/pdf/2203.06087">pdf</a>, <a href="https://arxiv.org/format/2203.06087">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.106.014908">10.1103/PhysRevC.106.014908 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of $蠁$-meson production in $p$$+$Al, $p$$+$Au, $d$$+$Au, and $^3$He$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/nucl-ex?searchtype=author&query=Beckman%2C+S">S. Beckman</a>, <a href="/search/nucl-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/nucl-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a>, <a href="/search/nucl-ex?searchtype=author&query=Blau%2C+D+S">D. S. Blau</a> , et al. (346 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2203.06087v2-abstract-short" style="display: inline;"> Small nuclear collisions are mainly sensitive to cold-nuclear-matter effects; however, the collective behavior observed in these collisions shows a hint of hot-nuclear-matter effects. The identified-particle spectra, especially the $蠁$ mesons which contain strange and antistrange quarks and have a relatively small hadronic-interaction cross section, are a good tool to study these effects. The PHEN… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.06087v2-abstract-full').style.display = 'inline'; document.getElementById('2203.06087v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.06087v2-abstract-full" style="display: none;"> Small nuclear collisions are mainly sensitive to cold-nuclear-matter effects; however, the collective behavior observed in these collisions shows a hint of hot-nuclear-matter effects. The identified-particle spectra, especially the $蠁$ mesons which contain strange and antistrange quarks and have a relatively small hadronic-interaction cross section, are a good tool to study these effects. The PHENIX experiment has measured $蠁$ mesons in a specific set of small collision systems $p$$+$Al, $p$$+$Au, and $^3$He$+$Au, as well as $d$$+$Au [Phys. Rev. C {\bf 83}, 024909 (2011)], at $\sqrt{s_{_{NN}}}=200$ GeV. The transverse-momentum spectra and nuclear-modification factors are presented and compared to theoretical-model predictions. The comparisons with different calculations suggest that quark-gluon plasma may be formed in these small collision systems at $\sqrt{s_{_{NN}}}=200$ GeV. However, the volume and the lifetime of the produced medium may be insufficient for observing strangeness-enhancement and jet-quenching effects. Comparison with calculations suggests that the main production mechanisms of $蠁$ mesons at midrapidity may be different in $p$$+$Al versus $p/d/$$^3$He$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV. While thermal quark recombination seems to dominate in $p/d/$$^3$He$+$Au collisions, fragmentation seems to be the main production mechanism in $p$$+$Al collisions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.06087v2-abstract-full').style.display = 'none'; document.getElementById('2203.06087v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 July, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">371 authors from 72 institutions, 13 pages, 7 figures, 7 tables, 2014 and 2015 data. v2 is version accepted for publication Physical Review C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 106, 014908 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2202.08158">arXiv:2202.08158</a> <span> [<a href="https://arxiv.org/pdf/2202.08158">pdf</a>, <a href="https://arxiv.org/format/2202.08158">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.130.251901">10.1103/PhysRevLett.130.251901 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of Direct-Photon Cross Section and Double-Helicity Asymmetry at $\sqrt{s}=510$ GeV in $\vec{p}+\vec{p}$ Collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=PHENIX+Collaboration"> PHENIX Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Akimoto%2C+R">R. Akimoto</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/nucl-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/nucl-ex?searchtype=author&query=Beckman%2C+S">S. Beckman</a>, <a href="/search/nucl-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a> , et al. (336 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2202.08158v2-abstract-short" style="display: inline;"> We present measurements of the cross section and double-helicity asymmetry $A_{LL}$ of direct-photon production in $\vec{p}+\vec{p}$ collisions at $\sqrt{s}=510$ GeV. The measurements have been performed at midrapidity ($|畏|<0.25$) with the PHENIX detector at the Relativistic Heavy Ion Collider. At relativistic energies, direct photons are dominantly produced from the initial quark-gluon hard scat… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2202.08158v2-abstract-full').style.display = 'inline'; document.getElementById('2202.08158v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2202.08158v2-abstract-full" style="display: none;"> We present measurements of the cross section and double-helicity asymmetry $A_{LL}$ of direct-photon production in $\vec{p}+\vec{p}$ collisions at $\sqrt{s}=510$ GeV. The measurements have been performed at midrapidity ($|畏|<0.25$) with the PHENIX detector at the Relativistic Heavy Ion Collider. At relativistic energies, direct photons are dominantly produced from the initial quark-gluon hard scattering and do not interact via the strong force at leading order. Therefore, at $\sqrt{s}=510$ GeV, where leading-order-effects dominate, these measurements provide clean and direct access to the gluon helicity in the polarized proton in the gluon-momentum-fraction range $0.02<x<0.08$, with direct sensitivity to the sign of the gluon contribution. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2202.08158v2-abstract-full').style.display = 'none'; document.getElementById('2202.08158v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 February, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">358 authors from 72 institutions, 8 pages, 2 figures, 1 table, 2013 data. v2 is version accepted by Physical Review Letters. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2202.03863">arXiv:2202.03863</a> <span> [<a href="https://arxiv.org/pdf/2202.03863">pdf</a>, <a href="https://arxiv.org/format/2202.03863">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.105.064912">10.1103/PhysRevC.105.064912 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of $蠄(2S)$ nuclear modification at backward and forward rapidity in $p$$+$$p$, $p$$+$Al, and $p$$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U+A">U. A. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/nucl-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/nucl-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a>, <a href="/search/nucl-ex?searchtype=author&query=Blau%2C+D+S">D. S. Blau</a>, <a href="/search/nucl-ex?searchtype=author&query=Bok%2C+J+S">J. S. Bok</a>, <a href="/search/nucl-ex?searchtype=author&query=Borisov%2C+V">V. Borisov</a>, <a href="/search/nucl-ex?searchtype=author&query=Brooks%2C+M+L">M. L. Brooks</a>, <a href="/search/nucl-ex?searchtype=author&query=Bryslawskyj%2C+J">J. Bryslawskyj</a>, <a href="/search/nucl-ex?searchtype=author&query=Bumazhnov%2C+V">V. Bumazhnov</a> , et al. (291 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2202.03863v2-abstract-short" style="display: inline;"> Suppression of the $J/蠄$ nuclear-modification factor has been seen as a trademark signature of final-state effects in large collision systems for decades. In small systems, the nuclear modification was attributed to cold-nuclear-matter effects until the observation of strong differential suppression of the $蠄(2S)$ state in $p/d$$+$$A$ collisions suggested the presence of final-state effects. Resul… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2202.03863v2-abstract-full').style.display = 'inline'; document.getElementById('2202.03863v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2202.03863v2-abstract-full" style="display: none;"> Suppression of the $J/蠄$ nuclear-modification factor has been seen as a trademark signature of final-state effects in large collision systems for decades. In small systems, the nuclear modification was attributed to cold-nuclear-matter effects until the observation of strong differential suppression of the $蠄(2S)$ state in $p/d$$+$$A$ collisions suggested the presence of final-state effects. Results of $J/蠄$ and $蠄(2S)$ measurements in the dimuon decay channel are presented here for $p$$+$$p$, $p$$+$Al, and $p$$+$Au collision systems at $\sqrt{s_{_{NN}}}=200$ GeV. The results are predominantly shown in the form of the nuclear-modification factor, $R_{pA}$, the ratio of the $蠄(2S)$ invariant yield per nucleon-nucleon collision in collisions of proton on target nucleus to that in $p$$+$$p$ collisions. Measurements of the $J/蠄$ and $蠄(2S)$ nuclear-modification factor are compared with shadowing and transport-model predictions, as well as to complementary measurements at Large-Hadron-Collider energies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2202.03863v2-abstract-full').style.display = 'none'; document.getElementById('2202.03863v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 February, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">315 authors from 69 institutions, 16 pages, 9 figures, 4 tables, 2015 data. v2 is version accepted for publication in Physical Review C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 105, 064912 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2112.05680">arXiv:2112.05680</a> <span> [<a href="https://arxiv.org/pdf/2112.05680">pdf</a>, <a href="https://arxiv.org/format/2112.05680">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.105.032003">10.1103/PhysRevD.105.032003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Transverse-single-spin asymmetries of charged pions at midrapidity in transversely polarized $p{+}p$ collisions at $\sqrt{s}=200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U+A">U. A. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/nucl-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/nucl-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a>, <a href="/search/nucl-ex?searchtype=author&query=Blau%2C+D+S">D. S. Blau</a>, <a href="/search/nucl-ex?searchtype=author&query=Bok%2C+J+S">J. S. Bok</a>, <a href="/search/nucl-ex?searchtype=author&query=Borisov%2C+V">V. Borisov</a>, <a href="/search/nucl-ex?searchtype=author&query=Brooks%2C+M+L">M. L. Brooks</a>, <a href="/search/nucl-ex?searchtype=author&query=Bryslawskyj%2C+J">J. Bryslawskyj</a>, <a href="/search/nucl-ex?searchtype=author&query=Bumazhnov%2C+V">V. Bumazhnov</a> , et al. (286 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2112.05680v2-abstract-short" style="display: inline;"> In 2015, the PHENIX collaboration has measured single-spin asymmetries for charged pions in transversely polarized proton-proton collisions at the center of mass energy of $\sqrt{s}=200$ GeV. The pions were detected at central rapidities of $|畏|<0.35$. The single-spin asymmetries are consistent with zero for each charge individually, as well as consistent with the previously published neutral-pion… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2112.05680v2-abstract-full').style.display = 'inline'; document.getElementById('2112.05680v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2112.05680v2-abstract-full" style="display: none;"> In 2015, the PHENIX collaboration has measured single-spin asymmetries for charged pions in transversely polarized proton-proton collisions at the center of mass energy of $\sqrt{s}=200$ GeV. The pions were detected at central rapidities of $|畏|<0.35$. The single-spin asymmetries are consistent with zero for each charge individually, as well as consistent with the previously published neutral-pion asymmetries in the same rapidity range. However, they show a slight indication of charge-dependent differences which may suggest a flavor dependence in the underlying mechanisms that create these asymmetries. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2112.05680v2-abstract-full').style.display = 'none'; document.getElementById('2112.05680v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 February, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 December, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">311 authors from 68 institutions, 8 pages, 3 figures, 1 table. 2015 data. v2 is version accepted for publication in Physical Review D. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 105, 032003 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2111.05756">arXiv:2111.05756</a> <span> [<a href="https://arxiv.org/pdf/2111.05756">pdf</a>, <a href="https://arxiv.org/format/2111.05756">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.105.064902">10.1103/PhysRevC.105.064902 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Systematic study of nuclear effects in $p$$+$Al, $p$$+$Au, $d$$+$Au, and $^{3}$He$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV using $蟺^0$ production </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U+A">U. A. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Al-Bataineh%2C+H">H. Al-Bataineh</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+J">J. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Angerami%2C+A">A. Angerami</a>, <a href="/search/nucl-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/nucl-ex?searchtype=author&query=Averbeck%2C+R">R. Averbeck</a>, <a href="/search/nucl-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Baksay%2C+G">G. Baksay</a>, <a href="/search/nucl-ex?searchtype=author&query=Baksay%2C+L">L. Baksay</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a> , et al. (529 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2111.05756v2-abstract-short" style="display: inline;"> The PHENIX collaboration presents a systematic study of $蟺^0$ production from $p$$+$$p$, $p$$+$Al, $p$$+$Au, $d$$+$Au, and $^{3}$He$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV. Measurements were performed with different centrality selections as well as the total inelastic, 0%--100%, selection for all collision systems. For 0%--100% collisions, the nuclear modification factors, $R_{xA}$, are cons… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.05756v2-abstract-full').style.display = 'inline'; document.getElementById('2111.05756v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.05756v2-abstract-full" style="display: none;"> The PHENIX collaboration presents a systematic study of $蟺^0$ production from $p$$+$$p$, $p$$+$Al, $p$$+$Au, $d$$+$Au, and $^{3}$He$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV. Measurements were performed with different centrality selections as well as the total inelastic, 0%--100%, selection for all collision systems. For 0%--100% collisions, the nuclear modification factors, $R_{xA}$, are consistent with unity for $p_T$ above 8 GeV/$c$, but exhibit an enhancement in peripheral collisions and a suppression in central collisions. The enhancement and suppression characteristics are similar for all systems for the same centrality class. It is shown that for high-$p_T$-$蟺^0$ production, the nucleons in the $d$ and $^3$He interact mostly independently with the Au nucleus and that the counter intuitive centrality dependence is likely due to a physical correlation between multiplicity and the presence of a hard scattering process. These observations disfavor models where parton energy loss has a significant contribution to nuclear modifications in small systems. Nuclear modifications at lower $p_T$ resemble the Cronin effect -- an increase followed by a peak in central or inelastic collisions and a plateau in peripheral collisions. The peak height has a characteristic ordering by system size as $p$$+$Au $>$ $d$$+$Au $>$ $^{3}$He$+$Au $>$ $p$$+$Al. For collisions with Au ions, current calculations based on initial state cold nuclear matter effects result in the opposite order, suggesting the presence of other contributions to nuclear modifications, in particular at lower $p_T$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.05756v2-abstract-full').style.display = 'none'; document.getElementById('2111.05756v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">554 authors from 81 institutions, 21 pages, 13 figures, and 3 tables. Data from 2008, 2014, and 2015. v2 is version accepted for publication in Physical Review C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 105, 064902 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2111.01607">arXiv:2111.01607</a> <span> [<a href="https://arxiv.org/pdf/2111.01607">pdf</a>, <a href="https://arxiv.org/format/2111.01607">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Centrality determination in heavy-ion collisions with the LHCb detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/nucl-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/nucl-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/nucl-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/nucl-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/nucl-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/nucl-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/nucl-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/nucl-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/nucl-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/nucl-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (929 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2111.01607v1-abstract-short" style="display: inline;"> The centrality of heavy-ion collisions is directly related to the medium created therein. A procedure to determine the centrality of collisions with the LHCb detector is implemented for lead-lead collisions at $\sqrt{s_{\scriptscriptstyle\text{NN}}}=5\, \mathrm{TeV}$ and lead-neon fixed-target collisions at $\sqrt{s_{\scriptscriptstyle\text{NN}}}=69\, \mathrm{GeV}$. The energy deposits in the elec… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.01607v1-abstract-full').style.display = 'inline'; document.getElementById('2111.01607v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.01607v1-abstract-full" style="display: none;"> The centrality of heavy-ion collisions is directly related to the medium created therein. A procedure to determine the centrality of collisions with the LHCb detector is implemented for lead-lead collisions at $\sqrt{s_{\scriptscriptstyle\text{NN}}}=5\, \mathrm{TeV}$ and lead-neon fixed-target collisions at $\sqrt{s_{\scriptscriptstyle\text{NN}}}=69\, \mathrm{GeV}$. The energy deposits in the electromagnetic calorimeter are used to determine and define the centrality classes. The correspondence between the number of participants and the centrality for the lead-lead collisions is in good agreement with the correspondence found in other experiments, and the centrality measurements for the lead-neon collisions presented here are the first performed in fixed-target collisions at the LHC. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.01607v1-abstract-full').style.display = 'none'; document.getElementById('2111.01607v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/Publications/p/LHCb-DP-2021-002.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-LHCb-DP-2021-002 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2110.07504">arXiv:2110.07504</a> <span> [<a href="https://arxiv.org/pdf/2110.07504">pdf</a>, <a href="https://arxiv.org/format/2110.07504">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.105.032004">10.1103/PhysRevD.105.032004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Transverse single spin asymmetries of forward neutrons in $p$$+$$p$, $p$$+$Al, and $p$$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV as a function of transverse and longitudinal momenta </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U+A">U. A. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/nucl-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/nucl-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a>, <a href="/search/nucl-ex?searchtype=author&query=Blau%2C+D+S">D. S. Blau</a>, <a href="/search/nucl-ex?searchtype=author&query=Bok%2C+J+S">J. S. Bok</a>, <a href="/search/nucl-ex?searchtype=author&query=Borisov%2C+V">V. Borisov</a>, <a href="/search/nucl-ex?searchtype=author&query=Brooks%2C+M+L">M. L. Brooks</a>, <a href="/search/nucl-ex?searchtype=author&query=Bryslawskyj%2C+J">J. Bryslawskyj</a>, <a href="/search/nucl-ex?searchtype=author&query=Bumazhnov%2C+V">V. Bumazhnov</a> , et al. (286 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2110.07504v2-abstract-short" style="display: inline;"> In 2015 the PHENIX collaboration at the Relativistic Heavy Ion Collider recorded $p$$+$$p$, $p$$+$Al, and $p$$+$Au collision data at center of mass energies of $\sqrt{s_{_{NN}}}=200$ GeV with the proton beam(s) transversely polarized. At very forward rapidities $畏>6.8$ relative to the polarized proton beam, neutrons were detected either inclusively or in (anti)correlation with detector activity re… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.07504v2-abstract-full').style.display = 'inline'; document.getElementById('2110.07504v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2110.07504v2-abstract-full" style="display: none;"> In 2015 the PHENIX collaboration at the Relativistic Heavy Ion Collider recorded $p$$+$$p$, $p$$+$Al, and $p$$+$Au collision data at center of mass energies of $\sqrt{s_{_{NN}}}=200$ GeV with the proton beam(s) transversely polarized. At very forward rapidities $畏>6.8$ relative to the polarized proton beam, neutrons were detected either inclusively or in (anti)correlation with detector activity related to hard collisions. The resulting single spin asymmetries, that were previously reported, have now been extracted as a function of the transverse momentum of the neutron as well as its longitudinal momentum fraction $x_F$. The explicit kinematic dependence, combined with the correlation information allows for a closer look at the interplay of different mechanisms suggested to describe these asymmetries, such as hadronic interactions or electromagnetic interactions in ultra-peripheral collisions, UPC. Events that are correlated with a hard collision indeed display a mostly negative asymmetry that increases in magnitude as a function of transverse momentum with only little dependence on $x_F$. In contrast, events that are not likely to have emerged from a hard collision display positive asymmetries for the nuclear collisions with a kinematic dependence that resembles that of a UPC based model. Because the UPC interaction depends strongly on the charge of the nucleus, those effects are very small for $p$$+$$p$ collisions, moderate for $p$$+$Al collisions, and large for $p$$+$Au collisions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.07504v2-abstract-full').style.display = 'none'; document.getElementById('2110.07504v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 February, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 October, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">311 authors from 68 institutions, 12 pages, 8 figures, 2015 data. v2 is version accepted for publication in Physical Review D. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 105, 032004 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2108.13115">arXiv:2108.13115</a> <span> [<a href="https://arxiv.org/pdf/2108.13115">pdf</a>, <a href="https://arxiv.org/format/2108.13115">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.128.142004">10.1103/PhysRevLett.128.142004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the nuclear modification factor and prompt charged particle production in $p\mathrm{Pb}$ and $pp$ collisions at $\sqrt{s_{\scriptscriptstyle\mathrm{NN}}}=5\,\mathrm{TeV}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/nucl-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/nucl-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/nucl-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/nucl-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/nucl-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/nucl-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/nucl-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/nucl-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/nucl-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/nucl-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (949 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2108.13115v2-abstract-short" style="display: inline;"> The production of prompt charged particles in proton-lead collisions and in proton-proton collisions at the nucleon-nucleon centre-of-mass energy ${\sqrt{s_{\scriptscriptstyle\mathrm{NN}}}=5\,\mathrm{TeV}}$ is studied at LHCb as a function of pseudorapidity ($畏$) and transverse momentum ($p_{\mathrm{T}}$) with respect to the proton beam direction. The nuclear modification factor for charged partic… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2108.13115v2-abstract-full').style.display = 'inline'; document.getElementById('2108.13115v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2108.13115v2-abstract-full" style="display: none;"> The production of prompt charged particles in proton-lead collisions and in proton-proton collisions at the nucleon-nucleon centre-of-mass energy ${\sqrt{s_{\scriptscriptstyle\mathrm{NN}}}=5\,\mathrm{TeV}}$ is studied at LHCb as a function of pseudorapidity ($畏$) and transverse momentum ($p_{\mathrm{T}}$) with respect to the proton beam direction. The nuclear modification factor for charged particles is determined as a function of $畏$ between ${-4.8<畏<-2.5}$ (backward region) and ${2.0<畏<4.8}$ (forward region), and $p_{\mathrm{T}}$ between ${0.2<p_{\mathrm{T}}<8.0\,\mathrm{GeV}/c}$. The results show a suppression of charged particle production in proton-lead collisions relative to proton-proton collisions in the forward region and an enhancement in the backward region for $p_{\mathrm{T}}$ larger than $1.5\,\mathrm{GeV}/c$. This measurement constrains nuclear PDFs and saturation models at previously unexplored values of the parton momentum fraction down to $10^{-6}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2108.13115v2-abstract-full').style.display = 'none'; document.getElementById('2108.13115v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 August, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2021-015.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2021-015, CERN-EP-2021-130 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.Lett. 128 (2022), 142004 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2108.02681">arXiv:2108.02681</a> <span> [<a href="https://arxiv.org/pdf/2108.02681">pdf</a>, <a href="https://arxiv.org/format/2108.02681">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.105.L032201">10.1103/PhysRevC.105.L032201 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> $J/蠄$ photo-production in Pb-Pb peripheral collisions at $\sqrt{s_{\rm NN}}$ = 5 TeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/nucl-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/nucl-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/nucl-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/nucl-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/nucl-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/nucl-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/nucl-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/nucl-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/nucl-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/nucl-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (929 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2108.02681v2-abstract-short" style="display: inline;"> The photo-production of $J/蠄$ mesons at low transverse momentum is studied in peripheral lead-lead collisions collected by the LHCb experiment at a centre-of-mass energy per nucleon pair of 5 TeV, corresponding to an integrated luminosity of 210 $\rm{渭b}^{-1}$. The $J/蠄$ candidates are reconstructed through the prompt decay into two muons of opposite charge in the rapidity region of $2.0<y<4.5$. T… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2108.02681v2-abstract-full').style.display = 'inline'; document.getElementById('2108.02681v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2108.02681v2-abstract-full" style="display: none;"> The photo-production of $J/蠄$ mesons at low transverse momentum is studied in peripheral lead-lead collisions collected by the LHCb experiment at a centre-of-mass energy per nucleon pair of 5 TeV, corresponding to an integrated luminosity of 210 $\rm{渭b}^{-1}$. The $J/蠄$ candidates are reconstructed through the prompt decay into two muons of opposite charge in the rapidity region of $2.0<y<4.5$. The results significantly improve previous measurements and are compared to the latest theoretical prediction. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2108.02681v2-abstract-full').style.display = 'none'; document.getElementById('2108.02681v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 August, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-043.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-043, CERN-EP-2021-122 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C. 105 (2022) L032201 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2107.06634">arXiv:2107.06634</a> <span> [<a href="https://arxiv.org/pdf/2107.06634">pdf</a>, <a href="https://arxiv.org/format/2107.06634">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.105.024901">10.1103/PhysRevC.105.024901 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Kinematic dependence of azimuthal anisotropies in $p$$+$Au, $d$$+$Au, $^3$He+Au at $\sqrt{s_{_{NN}}}$ = 200 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U+A">U. A. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayuso%2C+C">C. Ayuso</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/nucl-ex?searchtype=author&query=Beckman%2C+S">S. Beckman</a>, <a href="/search/nucl-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a> , et al. (360 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2107.06634v2-abstract-short" style="display: inline;"> There is strong evidence for the formation of small droplets of quark-gluon plasma in $p/d/^{3}$He+Au collisions at the Relativistic Heavy Ion Collider (RHIC) and in $p$+$p$/Pb collisions at the Large Hadron Collider. In particular, the analysis of data at RHIC for different geometries obtained by varying the projectile size and shape has proven insightful. In the present analysis, we find excelle… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.06634v2-abstract-full').style.display = 'inline'; document.getElementById('2107.06634v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2107.06634v2-abstract-full" style="display: none;"> There is strong evidence for the formation of small droplets of quark-gluon plasma in $p/d/^{3}$He+Au collisions at the Relativistic Heavy Ion Collider (RHIC) and in $p$+$p$/Pb collisions at the Large Hadron Collider. In particular, the analysis of data at RHIC for different geometries obtained by varying the projectile size and shape has proven insightful. In the present analysis, we find excellent agreement with the previously published PHENIX at RHIC results on elliptical and triangular flow with an independent analysis via the two-particle correlation method, which has quite different systematic uncertainties and an independent code base. In addition, the results are extended to other detector combinations with different kinematic (pseudorapidity) coverage. These results provide additional constraints on contributions from nonflow and longitudinal decorrelations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.06634v2-abstract-full').style.display = 'none'; document.getElementById('2107.06634v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 February, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 July, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">383 authors from 70 institutions, 13 pages, 12 figures, 4 tables, 2014,15,16 data (and supplemental material of 9 pages with 6 figures and 16 tables). v2 is version accepted for publication in Physical Review C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2107.03223">arXiv:2107.03223</a> <span> [<a href="https://arxiv.org/pdf/2107.03223">pdf</a>, <a href="https://arxiv.org/format/2107.03223">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP07(2022)117">10.1007/JHEP07(2022)117 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of coherent $J/蠄$ production in lead-lead collisions at $\sqrt{s_{NN}} = 5 TeV$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/nucl-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/nucl-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/nucl-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/nucl-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/nucl-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/nucl-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/nucl-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/nucl-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/nucl-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/nucl-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a>, <a href="/search/nucl-ex?searchtype=author&query=Artamonov%2C+A">A. Artamonov</a> , et al. (933 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2107.03223v2-abstract-short" style="display: inline;"> Coherent production of $J/蠄$ mesons is studied in ultraperipheral lead-lead collisions at a nucleon-nucleon centre-of-mass energy of 5 TeV, using a data sample collected by the LHCb experiment corresponding to an integrated luminosity of about $10 渭b^{-1}$. The $J/蠄$ mesons are reconstructed in the dimuon final state and are required to have transverse momentum below 1 GeV. The cross-section withi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.03223v2-abstract-full').style.display = 'inline'; document.getElementById('2107.03223v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2107.03223v2-abstract-full" style="display: none;"> Coherent production of $J/蠄$ mesons is studied in ultraperipheral lead-lead collisions at a nucleon-nucleon centre-of-mass energy of 5 TeV, using a data sample collected by the LHCb experiment corresponding to an integrated luminosity of about $10 渭b^{-1}$. The $J/蠄$ mesons are reconstructed in the dimuon final state and are required to have transverse momentum below 1 GeV. The cross-section within the rapidity range of $2.0 < y < 4.5$ is measured to be $4.45\pm0.24\pm0.18\pm0.58$ mb, where the first uncertainty is statistical, the second systematic and the third originates from the luminosity determination. The cross-section is also measured in $J/蠄$ rapidity intervals. The results are compared to predictions from phenomenological models. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.03223v2-abstract-full').style.display = 'none'; document.getElementById('2107.03223v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 July, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2021-013.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-CERN-EP-2021-108, LHCb-PAPER-2021-013 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 07 (2022) 117 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2103.07349">arXiv:2103.07349</a> <span> [<a href="https://arxiv.org/pdf/2103.07349">pdf</a>, <a href="https://arxiv.org/format/2103.07349">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.103.064905">10.1103/PhysRevC.103.064905 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the prompt-production cross-section ratio $蟽(蠂_{c2})/蟽(蠂_{c1})$ in $p$Pb collisions at $\sqrt{s_{NN}}$ = 8.16 TeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/nucl-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/nucl-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/nucl-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/nucl-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/nucl-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/nucl-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/nucl-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/nucl-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/nucl-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/nucl-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a>, <a href="/search/nucl-ex?searchtype=author&query=Artamonov%2C+A">A. Artamonov</a> , et al. (940 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2103.07349v2-abstract-short" style="display: inline;"> This Letter reports the first measurement of prompt $蠂_{c1}$ and $蠂_{c2}$ charmonium production in nuclear collisions at Large Hadron Collider energies. The cross-section ratio $蟽(蠂_{c2}) / 蟽(蠂_{c1})$ is measured in $p$Pb collisions at $\sqrt{s_{NN}}$ = 8.16 TeV, collected with the LHCb experiment. The $蠂_{c1,2}$ states are reconstructed via their decay to a $\rm{J}/蠄$ meson, subsequently decaying… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.07349v2-abstract-full').style.display = 'inline'; document.getElementById('2103.07349v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2103.07349v2-abstract-full" style="display: none;"> This Letter reports the first measurement of prompt $蠂_{c1}$ and $蠂_{c2}$ charmonium production in nuclear collisions at Large Hadron Collider energies. The cross-section ratio $蟽(蠂_{c2}) / 蟽(蠂_{c1})$ is measured in $p$Pb collisions at $\sqrt{s_{NN}}$ = 8.16 TeV, collected with the LHCb experiment. The $蠂_{c1,2}$ states are reconstructed via their decay to a $\rm{J}/蠄$ meson, subsequently decaying into a pair of oppositely charged muons, and a photon, which is reconstructed in the calorimeter or via its conversion in the detector material. The cross-section ratio is consistent with unity in the two considered rapidity regions. Comparison with a corresponding cross-section ratio previously measured by the LHCb collaboration in $pp$ collisions suggests that $蠂_{c1}$ and $蠂_{c2}$ states are similarly affected by nuclear effects occurring in $p$Pb collisions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.07349v2-abstract-full').style.display = 'none'; document.getElementById('2103.07349v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 June, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-048.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-048, CERN-EP-2021-024 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 103, 064905 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2103.04024">arXiv:2103.04024</a> <span> [<a href="https://arxiv.org/pdf/2103.04024">pdf</a>, <a href="https://arxiv.org/ps/2103.04024">ps</a>, <a href="https://arxiv.org/format/2103.04024">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1038/s41586-021-03282-z">10.1038/s41586-021-03282-z <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Asymmetry of Antimatter in the Proton </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Dove%2C+J">J. Dove</a>, <a href="/search/nucl-ex?searchtype=author&query=Kerns%2C+B">B. Kerns</a>, <a href="/search/nucl-ex?searchtype=author&query=McClellan%2C+R+E">R. E. McClellan</a>, <a href="/search/nucl-ex?searchtype=author&query=Miyasaka%2C+S">S. Miyasaka</a>, <a href="/search/nucl-ex?searchtype=author&query=Morton%2C+D+H">D. H. Morton</a>, <a href="/search/nucl-ex?searchtype=author&query=Nagai%2C+K">K. Nagai</a>, <a href="/search/nucl-ex?searchtype=author&query=Prasad%2C+S">S. Prasad</a>, <a href="/search/nucl-ex?searchtype=author&query=Sanftl%2C+F">F. Sanftl</a>, <a href="/search/nucl-ex?searchtype=author&query=Scott%2C+M+B+C">M. B. C. Scott</a>, <a href="/search/nucl-ex?searchtype=author&query=Tadepalli%2C+A+S">A. S. Tadepalli</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayuso%2C+C">C. Ayuso</a>, <a href="/search/nucl-ex?searchtype=author&query=Barker%2C+C+L">C. L. Barker</a>, <a href="/search/nucl-ex?searchtype=author&query=Brown%2C+C+N">C. N. Brown</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+W+C">W. C. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+A">A. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Christian%2C+D+C">D. C. Christian</a>, <a href="/search/nucl-ex?searchtype=author&query=Dannowitz%2C+B+P">B. P. Dannowitz</a>, <a href="/search/nucl-ex?searchtype=author&query=Daugherity%2C+M">M. Daugherity</a>, <a href="/search/nucl-ex?searchtype=author&query=Diefenthaler%2C+M">M. Diefenthaler</a>, <a href="/search/nucl-ex?searchtype=author&query=Fassi%2C+L+E">L. El Fassi</a>, <a href="/search/nucl-ex?searchtype=author&query=Geesaman%2C+D+F">D. F. Geesaman</a>, <a href="/search/nucl-ex?searchtype=author&query=Gilman%2C+R">R. Gilman</a>, <a href="/search/nucl-ex?searchtype=author&query=Goto%2C+Y">Y. Goto</a> , et al. (42 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2103.04024v1-abstract-short" style="display: inline;"> The fundamental building blocks of the proton, quarks and gluons, have been known for decades. However, we still have an incomplete theoretical and experimental understanding of how these particles and their dynamics give rise to the quantum bound state of the proton and its physical properties, such as for example its spin. The two up and the single down quarks that comprise the proton in the sim… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.04024v1-abstract-full').style.display = 'inline'; document.getElementById('2103.04024v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2103.04024v1-abstract-full" style="display: none;"> The fundamental building blocks of the proton, quarks and gluons, have been known for decades. However, we still have an incomplete theoretical and experimental understanding of how these particles and their dynamics give rise to the quantum bound state of the proton and its physical properties, such as for example its spin. The two up and the single down quarks that comprise the proton in the simplest picture account only for a few percent of the proton mass, the bulk of which is in the form of quark kinetic and potential energy and gluon energy from the strong force. An essential feature of this force, as described by quantum chromodynamics, is its ability to create matter-antimatter quark pairs inside the proton that exist only for a very short time. Their fleeting existence makes the antimatter quarks within protons difficult to study, but their existence is discernible in reactions where a matter-antimatter quark pair annihilates. In this picture of quark-antiquark creation by the strong force, the probability distributions as a function of momentum for the presence of up and down antimatter quarks should be nearly identical, since their masses are quite similar and small compared to the mass of the proton. In the present manuscript, we show evidence from muon pair production measurements that these distributions are significantly different, with more abundant down antimatter quarks than up antimatter quarks over a wide range of momentum. These results revive interest in several proposed mechanisms as the origin of this antimatter asymmetry in the proton that had been disfavored by the previous results and point to the future measurements that can distinguish between these mechanisms. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.04024v1-abstract-full').style.display = 'none'; document.getElementById('2103.04024v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 5 figures, 5 tables; Matches published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-PUB-21-073-E </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nature, 590, 561-565 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2102.13585">arXiv:2102.13585</a> <span> [<a href="https://arxiv.org/pdf/2102.13585">pdf</a>, <a href="https://arxiv.org/format/2102.13585">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.127.162001">10.1103/PhysRevLett.127.162001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Probing gluon spin-momentum correlations in transversely polarized protons through midrapidity isolated direct photons in $p^\uparrow+p$ collisions at $\sqrt{s}=200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U+A">U. A. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/nucl-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/nucl-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a>, <a href="/search/nucl-ex?searchtype=author&query=Blau%2C+D+S">D. S. Blau</a>, <a href="/search/nucl-ex?searchtype=author&query=Bok%2C+J+S">J. S. Bok</a>, <a href="/search/nucl-ex?searchtype=author&query=Brooks%2C+M+L">M. L. Brooks</a>, <a href="/search/nucl-ex?searchtype=author&query=Bryslawskyj%2C+J">J. Bryslawskyj</a>, <a href="/search/nucl-ex?searchtype=author&query=Bumazhnov%2C+V">V. Bumazhnov</a>, <a href="/search/nucl-ex?searchtype=author&query=Campbell%2C+S">S. Campbell</a> , et al. (286 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2102.13585v2-abstract-short" style="display: inline;"> Studying spin-momentum correlations in hadronic collisions offers a glimpse into a three-dimensional picture of proton structure. The transverse single-spin asymmetry for midrapidity isolated direct photons in $p^\uparrow+p$ collisions at $\sqrt{s}=200$ GeV is measured with the PHENIX detector at the Relativistic Heavy Ion Collider (RHIC). Because direct photons in particular are produced from the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2102.13585v2-abstract-full').style.display = 'inline'; document.getElementById('2102.13585v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2102.13585v2-abstract-full" style="display: none;"> Studying spin-momentum correlations in hadronic collisions offers a glimpse into a three-dimensional picture of proton structure. The transverse single-spin asymmetry for midrapidity isolated direct photons in $p^\uparrow+p$ collisions at $\sqrt{s}=200$ GeV is measured with the PHENIX detector at the Relativistic Heavy Ion Collider (RHIC). Because direct photons in particular are produced from the hard scattering and do not interact via the strong force, this measurement is a clean probe of initial-state spin-momentum correlations inside the proton and is in particular sensitive to gluon interference effects within the proton. This is the first time direct photons have been used as a probe of spin-momentum correlations at RHIC. The uncertainties on the results are a fifty-fold improvement with respect to those of the one prior measurement for the same observable, from the Fermilab E704 experiment. These results constrain gluon spin-momentum correlations in transversely polarized protons. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2102.13585v2-abstract-full').style.display = 'none'; document.getElementById('2102.13585v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 August, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 February, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">312 authors from 68 institutions, 8 pages, 2 figures, 1 table, 2015 data. v2 is version accepted by Physical Review Letters. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2009.03838">arXiv:2009.03838</a> <span> [<a href="https://arxiv.org/pdf/2009.03838">pdf</a>, <a href="https://arxiv.org/format/2009.03838">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> New opportunities at the photon energy frontier </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adam%2C+J">Jaroslav Adam</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">Christine Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Angerami%2C+A">Aaron Angerami</a>, <a href="/search/nucl-ex?searchtype=author&query=Audurier%2C+B">Benjamin Audurier</a>, <a href="/search/nucl-ex?searchtype=author&query=Bertulani%2C+C">Carlos Bertulani</a>, <a href="/search/nucl-ex?searchtype=author&query=Bierlich%2C+C">Christian Bierlich</a>, <a href="/search/nucl-ex?searchtype=author&query=Blok%2C+B">Boris Blok</a>, <a href="/search/nucl-ex?searchtype=author&query=Brandenburg%2C+J+D">James Daniel Brandenburg</a>, <a href="/search/nucl-ex?searchtype=author&query=Brodsky%2C+S">Stanley Brodsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Bylinkin%2C+A">Aleksandr Bylinkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Roman%2C+V+C">Veronica Canoa Roman</a>, <a href="/search/nucl-ex?searchtype=author&query=Celiberto%2C+F+G">Francesco Giovanni Celiberto</a>, <a href="/search/nucl-ex?searchtype=author&query=Cepila%2C+J">Jan Cepila</a>, <a href="/search/nucl-ex?searchtype=author&query=Chachamis%2C+G">Grigorios Chachamis</a>, <a href="/search/nucl-ex?searchtype=author&query=Cole%2C+B">Brian Cole</a>, <a href="/search/nucl-ex?searchtype=author&query=Contreras%2C+G">Guillermo Contreras</a>, <a href="/search/nucl-ex?searchtype=author&query=d%27Enterria%2C+D">David d'Enterria</a>, <a href="/search/nucl-ex?searchtype=author&query=Dumitru%2C+A">Adrian Dumitru</a>, <a href="/search/nucl-ex?searchtype=author&query=T%C3%A9llez%2C+A+F">Arturo Fern谩ndez T茅llez</a>, <a href="/search/nucl-ex?searchtype=author&query=Frankfurt%2C+L">Leonid Frankfurt</a>, <a href="/search/nucl-ex?searchtype=author&query=Ducati%2C+M+B+G">Maria Beatriz Gay Ducati</a>, <a href="/search/nucl-ex?searchtype=author&query=Geurts%2C+F">Frank Geurts</a>, <a href="/search/nucl-ex?searchtype=author&query=da+Silveira%2C+G+G">Gustavo Gil da Silveira</a>, <a href="/search/nucl-ex?searchtype=author&query=Giuli%2C+F">Francesco Giuli</a>, <a href="/search/nucl-ex?searchtype=author&query=Goncalves%2C+V+P">Victor P. Goncalves</a> , et al. (50 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2009.03838v1-abstract-short" style="display: inline;"> Ultra-peripheral collisions (UPCs) involving heavy ions and protons are the energy frontier for photon-mediated interactions. UPC photons can be used for many purposes, including probing low-$x$ gluons via photoproduction of dijets and vector mesons, probes of beyond-standard-model processes, such as those enabled by light-by-light scattering, and studies of two-photon production of the Higgs. </span> <span class="abstract-full has-text-grey-dark mathjax" id="2009.03838v1-abstract-full" style="display: none;"> Ultra-peripheral collisions (UPCs) involving heavy ions and protons are the energy frontier for photon-mediated interactions. UPC photons can be used for many purposes, including probing low-$x$ gluons via photoproduction of dijets and vector mesons, probes of beyond-standard-model processes, such as those enabled by light-by-light scattering, and studies of two-photon production of the Higgs. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2009.03838v1-abstract-full').style.display = 'none'; document.getElementById('2009.03838v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 September, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Letter of Interest submitted to Snowmass 2021</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.14686">arXiv:2005.14686</a> <span> [<a href="https://arxiv.org/pdf/2005.14686">pdf</a>, <a href="https://arxiv.org/format/2005.14686">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.102.064905">10.1103/PhysRevC.102.064905 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Production of $蟺^0$ and $畏$ mesons in U$+$U collisions at $\sqrt{s_{_{NN}}}=192$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Akimoto%2C+R">R. Akimoto</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+J">J. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/nucl-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+X">X. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Baublis%2C+V">V. Baublis</a>, <a href="/search/nucl-ex?searchtype=author&query=Baumann%2C+C">C. Baumann</a>, <a href="/search/nucl-ex?searchtype=author&query=Baumgart%2C+S">S. Baumgart</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/nucl-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a> , et al. (378 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2005.14686v2-abstract-short" style="display: inline;"> The PHENIX experiment at the Relativistic Heavy Ion Collider measured $蟺^0$ and $畏$ mesons at midrapidity in U$+$U collisions at $\sqrt{s_{_{NN}}}=192$ GeV in a wide transverse momentum range. Measurements were performed in the $蟺^0(畏)\rightarrow纬纬$ decay modes. A strong suppression of $蟺^0$ and $畏$ meson production at high transverse momentum was observed in central U$+$U collisions relative to b… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.14686v2-abstract-full').style.display = 'inline'; document.getElementById('2005.14686v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.14686v2-abstract-full" style="display: none;"> The PHENIX experiment at the Relativistic Heavy Ion Collider measured $蟺^0$ and $畏$ mesons at midrapidity in U$+$U collisions at $\sqrt{s_{_{NN}}}=192$ GeV in a wide transverse momentum range. Measurements were performed in the $蟺^0(畏)\rightarrow纬纬$ decay modes. A strong suppression of $蟺^0$ and $畏$ meson production at high transverse momentum was observed in central U$+$U collisions relative to binary scaled $p$$+$$p$ results. Yields of $蟺^0$ and $畏$ mesons measured in U$+$U collisions show similar suppression pattern to the ones measured in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV for similar numbers of participant nucleons. The $畏$/$蟺^0$ ratios do not show dependence on centrality or transverse momentum, and are consistent with previously measured values in hadron-hadron, hadron-nucleus, nucleus-nucleus, and $e^+e^-$ collisions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.14686v2-abstract-full').style.display = 'none'; document.getElementById('2005.14686v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">403 authors from 72 institutions, 13 pages, 6 figures, 7 tables, 2012 data. v2 is version accepted by Physical Review C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 102, 064905 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.14276">arXiv:2005.14276</a> <span> [<a href="https://arxiv.org/pdf/2005.14276">pdf</a>, <a href="https://arxiv.org/format/2005.14276">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.102.092002">10.1103/PhysRevD.102.092002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Production of $b\bar{b}$ at forward rapidity in $p$+$p$ collisions at $\sqrt{s}=510$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Akimoto%2C+R">R. Akimoto</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/nucl-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/nucl-ex?searchtype=author&query=Beckman%2C+S">S. Beckman</a>, <a href="/search/nucl-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a> , et al. (325 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2005.14276v2-abstract-short" style="display: inline;"> The cross section of bottom quark-antiquark ($b\bar{b}$) production in $p$+$p$ collisions at $\sqrt{s}=510$ GeV is measured with the PHENIX detector at the Relativistic Heavy Ion Collider. The results are based on the yield of high mass, like-sign muon pairs measured within the PHENIX muon arm acceptance ($1.2<|y|<2.2$). The $b\bar{b}$ signal is extracted from like-sign dimuons by utilizing the un… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.14276v2-abstract-full').style.display = 'inline'; document.getElementById('2005.14276v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.14276v2-abstract-full" style="display: none;"> The cross section of bottom quark-antiquark ($b\bar{b}$) production in $p$+$p$ collisions at $\sqrt{s}=510$ GeV is measured with the PHENIX detector at the Relativistic Heavy Ion Collider. The results are based on the yield of high mass, like-sign muon pairs measured within the PHENIX muon arm acceptance ($1.2<|y|<2.2$). The $b\bar{b}$ signal is extracted from like-sign dimuons by utilizing the unique properties of neutral $B$ meson oscillation. We report a differential cross section of $d蟽_{b\bar{b}\rightarrow 渭^\pm渭^\pm}/dy = 0.16 \pm 0.01~(\mbox{stat}) \pm 0.02~(\mbox{syst}) \pm 0.02~(\mbox{global})$ nb for like-sign muons in the rapidity and $p_T$ ranges $1.2<|y|<2.2$ and $p_T>1$ GeV/$c$, and dimuon mass of 5--10 GeV/$c^2$. The extrapolated total cross section at this energy for $b\bar{b}$ production is $13.1 \pm 0.6~(\mbox{stat}) \pm 1.5~(\mbox{syst}) \pm 2.7~(\mbox{global})~渭$b. The total cross section is compared to a perturbative quantum chromodynamics calculation and is consistent within uncertainties. The azimuthal opening angle between muon pairs from $b\bar{b}$ decays and their $p_T$ distributions are compared to distributions generated using {\sc ps pythia 6}, which includes next-to-leading order processes. The azimuthal correlations and pair $p_T$ distribution are not very well described by {\sc pythia} calculations, but are still consistent within uncertainties. Flavor creation and flavor excitation subprocesses are favored over gluon splitting. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.14276v2-abstract-full').style.display = 'none'; document.getElementById('2005.14276v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 October, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">360 authors from 69 institutions, 13 pages, 11 figures, 2 tables, 2013 data. v2 is version accepted for publication in Physical Review D. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 102, 092002 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.14270">arXiv:2005.14270</a> <span> [<a href="https://arxiv.org/pdf/2005.14270">pdf</a>, <a href="https://arxiv.org/format/2005.14270">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.102.054910">10.1103/PhysRevC.102.054910 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of jet-medium interactions via direct photon-hadron correlations in Au$+$Au and $d$$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/nucl-ex?searchtype=author&query=Afanasiev%2C+S">S. Afanasiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Akimoto%2C+R">R. Akimoto</a>, <a href="/search/nucl-ex?searchtype=author&query=Al-Bataineh%2C+H">H. Al-Bataineh</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+J">J. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Al-Ta%27ani%2C+H">H. Al-Ta'ani</a>, <a href="/search/nucl-ex?searchtype=author&query=Angerami%2C+A">A. Angerami</a>, <a href="/search/nucl-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/nucl-ex?searchtype=author&query=Averbeck%2C+R">R. Averbeck</a>, <a href="/search/nucl-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Baksay%2C+G">G. Baksay</a>, <a href="/search/nucl-ex?searchtype=author&query=Baksay%2C+L">L. Baksay</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a> , et al. (553 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2005.14270v2-abstract-short" style="display: inline;"> We present direct photon-hadron correlations in 200 GeV/A Au$+$Au, $d$$+$Au and $p$$+$$p$ collisions, for direct photon $p_T$ from 5--12 GeV/$c$, collected by the PHENIX Collaboration in the years from 2006 to 2011. We observe no significant modification of jet fragmentation in $d$$+$Au collisions, indicating that cold nuclear matter effects are small or absent. Hadrons carrying a large fraction o… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.14270v2-abstract-full').style.display = 'inline'; document.getElementById('2005.14270v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.14270v2-abstract-full" style="display: none;"> We present direct photon-hadron correlations in 200 GeV/A Au$+$Au, $d$$+$Au and $p$$+$$p$ collisions, for direct photon $p_T$ from 5--12 GeV/$c$, collected by the PHENIX Collaboration in the years from 2006 to 2011. We observe no significant modification of jet fragmentation in $d$$+$Au collisions, indicating that cold nuclear matter effects are small or absent. Hadrons carrying a large fraction of the quark's momentum are suppressed in Au$+$Au compared to $p$$+$$p$ and $d$$+$Au. As the momentum fraction decreases, the yield of hadrons in Au$+$Au increases to an excess over the yield in $p$$+$$p$ collisions. The excess is at large angles and at low hadron $p_T$ and is most pronounced for hadrons associated with lower momentum direct photons. Comparison to theoretical calculations suggests that the hadron excess arises from medium response to energy deposited by jets. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.14270v2-abstract-full').style.display = 'none'; document.getElementById('2005.14270v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">578 authors from 80 institutions, 11 pages, 7 figures, data from 2007, 2008, 2010, and 2011. v2 is version accepted for publication in Physical Review C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 102, 054910 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2004.02681">arXiv:2004.02681</a> <span> [<a href="https://arxiv.org/pdf/2004.02681">pdf</a>, <a href="https://arxiv.org/ps/2004.02681">ps</a>, <a href="https://arxiv.org/format/2004.02681">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.102.032001">10.1103/PhysRevD.102.032001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of charged pion double spin asymmetries at midrapidity in longitudinally polarized $p$$+$$p$ collisions at $\sqrt{s}=510$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U+A">U. A. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Akimoto%2C+R">R. Akimoto</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/nucl-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/nucl-ex?searchtype=author&query=Beckman%2C+S">S. Beckman</a>, <a href="/search/nucl-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a> , et al. (335 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2004.02681v2-abstract-short" style="display: inline;"> The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the longitudinal double spin asymmetries, $A_{LL}$, for charged pions at midrapidity ($|畏|<0.35$) in longitudinally polarized $p$$+$$p$ collisions at $\sqrt{s}=510$ GeV. These measurements are sensitive to the gluon spin contribution to the total spin of the proton in the parton momentum fraction $x$ range between 0.04 and 0… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.02681v2-abstract-full').style.display = 'inline'; document.getElementById('2004.02681v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2004.02681v2-abstract-full" style="display: none;"> The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the longitudinal double spin asymmetries, $A_{LL}$, for charged pions at midrapidity ($|畏|<0.35$) in longitudinally polarized $p$$+$$p$ collisions at $\sqrt{s}=510$ GeV. These measurements are sensitive to the gluon spin contribution to the total spin of the proton in the parton momentum fraction $x$ range between 0.04 and 0.09. One can infer the sign of the gluon polarization from the ordering of pion asymmetries with charge alone. The asymmetries are found to be consistent with global quantum-chromodynamics fits of deep-inelastic scattering and data at $\sqrt{s}=200$ GeV, which show a nonzero positive contribution of gluon spin to the proton spin. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.02681v2-abstract-full').style.display = 'none'; document.getElementById('2004.02681v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 April, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">360 authors, 8 pages, 6 figures, 1 table, 2013 data. v2 is version accepted for publication in Physical Review D. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 102, 032001 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2002.12333">arXiv:2002.12333</a> <span> [<a href="https://arxiv.org/pdf/2002.12333">pdf</a>, <a href="https://arxiv.org/format/2002.12333">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> </div> <p class="title is-5 mathjax"> Probing Nucleons and Nuclei in High Energy Collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">Christine A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E">Elke Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Aslan%2C+F">Fatma Aslan</a>, <a href="/search/nucl-ex?searchtype=author&query=Bacchetta%2C+A">Alessandro Bacchetta</a>, <a href="/search/nucl-ex?searchtype=author&query=Balitsky%2C+I">Ian Balitsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Benic%2C+S">Sanjin Benic</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattacharya%2C+S">Shohini Bhattacharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Boglione%2C+M">Mariaelena Boglione</a>, <a href="/search/nucl-ex?searchtype=author&query=Burkardt%2C+M">Matthias Burkardt</a>, <a href="/search/nucl-ex?searchtype=author&query=Cammarota%2C+J">Justin Cammarota</a>, <a href="/search/nucl-ex?searchtype=author&query=Chirilli%2C+G+A">Giovanni A. Chirilli</a>, <a href="/search/nucl-ex?searchtype=author&query=Cocuzza%2C+C">Christopher Cocuzza</a>, <a href="/search/nucl-ex?searchtype=author&query=Courtoy%2C+A">Aurore Courtoy</a>, <a href="/search/nucl-ex?searchtype=author&query=de+Florian%2C+D">Daniel de Florian</a>, <a href="/search/nucl-ex?searchtype=author&query=Di+Nezza%2C+P">Pasquale Di Nezza</a>, <a href="/search/nucl-ex?searchtype=author&query=Dumitru%2C+A">Adrian Dumitru</a>, <a href="/search/nucl-ex?searchtype=author&query=Fucini%2C+S">Sara Fucini</a>, <a href="/search/nucl-ex?searchtype=author&query=Fukushima%2C+K">Kenji Fukushima</a>, <a href="/search/nucl-ex?searchtype=author&query=Furletova%2C+Y">Yulia Furletova</a>, <a href="/search/nucl-ex?searchtype=author&query=Gamberg%2C+L">Leonard Gamberg</a>, <a href="/search/nucl-ex?searchtype=author&query=Garcia-Montero%2C+O">Oscar Garcia-Montero</a>, <a href="/search/nucl-ex?searchtype=author&query=Gelis%2C+F">Fran莽ois Gelis</a>, <a href="/search/nucl-ex?searchtype=author&query=Guzey%2C+V">Vadim Guzey</a>, <a href="/search/nucl-ex?searchtype=author&query=Hatta%2C+Y">Yoshitaka Hatta</a>, <a href="/search/nucl-ex?searchtype=author&query=Hautmann%2C+F">Francesco Hautmann</a> , et al. (65 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2002.12333v2-abstract-short" style="display: inline;"> This volume is a collection of contributions for the 7-week program "Probing Nucleons and Nuclei in High Energy Collisions" that was held at the Institute for Nuclear Theory in Seattle, WA, USA, from October 1 until November 16, 2018. The program was dedicated to the physics of the Electron Ion Collider (EIC), the world's first polarized electron-nucleon (ep) and electron-nucleus (eA) collider to… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2002.12333v2-abstract-full').style.display = 'inline'; document.getElementById('2002.12333v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2002.12333v2-abstract-full" style="display: none;"> This volume is a collection of contributions for the 7-week program "Probing Nucleons and Nuclei in High Energy Collisions" that was held at the Institute for Nuclear Theory in Seattle, WA, USA, from October 1 until November 16, 2018. The program was dedicated to the physics of the Electron Ion Collider (EIC), the world's first polarized electron-nucleon (ep) and electron-nucleus (eA) collider to be constructed in the USA. These proceedings are organized by chapters, corresponding to the weeks of the program: Week I, Generalized parton distributions; Week II, Transverse spin and TMDs; Week III, Longitudinal spin; Week IV, Symposium week; Weeks V & VI, eA collisions; Week VII, pA and AA collisions. We hope these proceedings will be useful to readers as a compilation of EIC-related science at the end of the second decade of the XXI century. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2002.12333v2-abstract-full').style.display = 'none'; document.getElementById('2002.12333v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 February, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Electron Ion Collider, INT 18-3 Program. Published by World Scientific. Duplicates content of arXiv:1912.10965, arXiv:1912.10724, arXiv:1910.03006, arXiv:1910.07982, arXiv:1912.13397, arXiv:1910.01979, arXiv:2001.07862, arXiv:2001.03700, arXiv:1910.01030, arXiv:1910.01273, arXiv:1912.13020, arXiv:1910.06003, arXiv:2001.03655, arXiv:1909.12591, arXiv:1909.09809, arXiv:1910.04806, arXiv:2001.05978</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1912.13424">arXiv:1912.13424</a> <span> [<a href="https://arxiv.org/pdf/1912.13424">pdf</a>, <a href="https://arxiv.org/format/1912.13424">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.101.052006">10.1103/PhysRevD.101.052006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> $J/蠄$ and $蠄(2S)$ production at forward rapidity in $p$+$p$ collisions at $\sqrt{s}=510$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Acharya%2C+U+A">U. A. Acharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/nucl-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Akimoto%2C+R">R. Akimoto</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/nucl-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/nucl-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/nucl-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/nucl-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/nucl-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/nucl-ex?searchtype=author&query=Beckman%2C+S">S. Beckman</a>, <a href="/search/nucl-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a> , et al. (335 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1912.13424v2-abstract-short" style="display: inline;"> The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the differential cross section, mean transverse momentum, mean transverse momentum squared of inclusive $J/蠄$ and cross-section ratio of $蠄(2S)$ to $J/蠄$ at forward rapidity in \pp collisions at \sqrts = 510 GeV via the dimuon decay channel. Comparison is made to inclusive $J/蠄$ cross sections measured at \sqrts = 200 GeV an… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.13424v2-abstract-full').style.display = 'inline'; document.getElementById('1912.13424v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1912.13424v2-abstract-full" style="display: none;"> The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the differential cross section, mean transverse momentum, mean transverse momentum squared of inclusive $J/蠄$ and cross-section ratio of $蠄(2S)$ to $J/蠄$ at forward rapidity in \pp collisions at \sqrts = 510 GeV via the dimuon decay channel. Comparison is made to inclusive $J/蠄$ cross sections measured at \sqrts = 200 GeV and 2.76--13 TeV. The result is also compared to leading-order nonrelativistic QCD calculations coupled to a color-glass-condensate description of the low-$x$ gluons in the proton at low transverse momentum ($p_T$) and to next-to-leading order nonrelativistic QCD calculations for the rest of the $p_T$ range. These calculations overestimate the data at low $p_T$. While consistent with the data within uncertainties above $\approx3$ GeV/$c$, the calculations are systematically below the data. The total cross section times the branching ratio is BR $d蟽^{J/蠄}_{pp}/dy (1.2<|y|<2.2, 0<p_T<10~\mbox{GeV/$c$}) =$ 54.3 $\pm$ 0.5 (stat) $\pm$ 5.5 (syst) nb. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.13424v2-abstract-full').style.display = 'none'; document.getElementById('1912.13424v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 February, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 31 December, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">361 authors from 71 institutions, 13 pages, 4 tables, 11 figures, 2013 data. v2 is version accepted for publication in Physical Review D. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 101, 052006 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1912.10724">arXiv:1912.10724</a> <span> [<a href="https://arxiv.org/pdf/1912.10724">pdf</a>, <a href="https://arxiv.org/format/1912.10724">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Searching for TMD-factorization breaking in p+p and p+A collisions: Color interactions in QCD </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">Christine A. Aidala</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1912.10724v1-abstract-short" style="display: inline;"> Dihadron and isolated direct photon-hadron angular correlations have been measured in $p$+$p$ and $p$+A collisions to investigate possible effects from transverse-momentum-dependent factorization breaking due to color exchange between partons involved in the hard scattering and the proton remnants. The correlations are sensitive to nonperturbative initial-state and final-state transverse momentum… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.10724v1-abstract-full').style.display = 'inline'; document.getElementById('1912.10724v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1912.10724v1-abstract-full" style="display: none;"> Dihadron and isolated direct photon-hadron angular correlations have been measured in $p$+$p$ and $p$+A collisions to investigate possible effects from transverse-momentum-dependent factorization breaking due to color exchange between partons involved in the hard scattering and the proton remnants. The correlations are sensitive to nonperturbative initial-state and final-state transverse momentum $k_T$ and $j_T$ in the azimuthal nearly back-to-back region $螖蠁\sim 蟺$. In this region, transverse-momentum-dependent evolution can be studied when several different hard scales are measured. To have sensitivity to small transverse momentum scales, nonperturbative momentum widths of \pout, the out-of-plane transverse momentum component perpendicular to the trigger particle, are measured. To quantify the magnitude of any transverse-momentum-dependent factorization breaking effects, calculations will need to be performed for comparison. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.10724v1-abstract-full').style.display = 'none'; document.getElementById('1912.10724v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 December, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">4 pages; proceedings of INT Workshop INT-18-3: Probing Nucleons and Nuclei in High Energy Collisions</span> </p> </li> </ol> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a 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