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<button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol 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/2409.03728">arXiv:2409.03728</a> <span> [<a href="https://arxiv.org/pdf/2409.03728">pdf</a>, <a href="https://arxiv.org/format/2409.03728">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> </div> </div> <p class="title is-5 mathjax"> Multiplicity dependent $J/蠄$ and $蠄(2S)$ production at forward and backward rapidity in $p$$+$$p$ collisions at $\sqrt{s}=200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=PHENIX+Collaboration"> PHENIX Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/hep-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/hep-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/hep-ex?searchtype=author&query=Antsupov%2C+S">S. Antsupov</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/hep-ex?searchtype=author&query=Bannikov%2C+E">E. Bannikov</a>, <a href="/search/hep-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/hep-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/hep-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/hep-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a>, <a href="/search/hep-ex?searchtype=author&query=Blau%2C+D+S">D. S. Blau</a>, <a href="/search/hep-ex?searchtype=author&query=Bok%2C+J+S">J. S. Bok</a> , et al. (276 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="2409.03728v1-abstract-short" style="display: inline;"> The $J/蠄$ and $蠄(2S)$ charmonium states, composed of $c\bar{c}$ quark pairs and known since the 1970s, are widely believed to serve as ideal probes to test quantum chromodynamics in high-energy hadronic interactions. However, there is not yet a complete understanding of the charmonium-production mechanism. Recent measurements of $J/蠄$ production as a function of event charged-particle multiplicity… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.03728v1-abstract-full').style.display = 'inline'; document.getElementById('2409.03728v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.03728v1-abstract-full" style="display: none;"> The $J/蠄$ and $蠄(2S)$ charmonium states, composed of $c\bar{c}$ quark pairs and known since the 1970s, are widely believed to serve as ideal probes to test quantum chromodynamics in high-energy hadronic interactions. However, there is not yet a complete understanding of the charmonium-production mechanism. Recent measurements of $J/蠄$ production as a function of event charged-particle multiplicity at the collision energies of both the Large Hadron Collider (LHC) and the Relativistic Heavy Ion Collider (RHIC) show enhanced $J/蠄$ production yields with increasing multiplicity. One potential explanation for this type of dependence is multiparton interactions (MPI). We carry out the first measurements of self-normalized $J/蠄$ yields and the $蠄(2S)$ to $J/蠄$ ratio at both forward and backward rapidities as a function of self-normalized charged-particle multiplicity in $p$$+$$p$ collisions at $\sqrt{s}=200$ GeV. In addition, detailed {\sc pythia} studies tuned to RHIC energies were performed to investigate the MPI impacts. We find that the PHENIX data at RHIC are consistent with recent LHC measurements and can only be described by {\sc pythia} calculations that include MPI effects. The forward and backward $蠄(2S)$ to $J/蠄$ ratio, which serves as a unique and powerful approach to study final-state effects on charmonium production, is found to be less dependent on the charged-particle multiplicity. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.03728v1-abstract-full').style.display = 'none'; document.getElementById('2409.03728v1-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 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">301 authors from 69 institutions, 8 pages, 3 figures. v1 is version submitted to Physical Review D 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> </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/hep-ex?searchtype=author&query=PHENIX+Collaboration"> PHENIX Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/hep-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Akimoto%2C+R">R. Akimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+J">J. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/hep-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/hep-ex?searchtype=author&query=Antsupov%2C+S">S. Antsupov</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/hep-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+X">X. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/hep-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/hep-ex?searchtype=author&query=Bannikov%2C+E">E. Bannikov</a>, <a href="/search/hep-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-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/2404.08317">arXiv:2404.08317</a> <span> [<a href="https://arxiv.org/pdf/2404.08317">pdf</a>, <a href="https://arxiv.org/format/2404.08317">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="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Technical Design Report of the Spin Physics Detector at NICA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=The+SPD+Collaboration"> The SPD Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abazov%2C+V">V. Abazov</a>, <a href="/search/hep-ex?searchtype=author&query=Abramov%2C+V">V. Abramov</a>, <a href="/search/hep-ex?searchtype=author&query=Afanasyev%2C+L">L. Afanasyev</a>, <a href="/search/hep-ex?searchtype=author&query=Akhunzyanov%2C+R">R. Akhunzyanov</a>, <a href="/search/hep-ex?searchtype=author&query=Akindinov%2C+A">A. Akindinov</a>, <a href="/search/hep-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/hep-ex?searchtype=author&query=Aleshko%2C+A">A. Aleshko</a>, <a href="/search/hep-ex?searchtype=author&query=Alexakhin%2C+V">V. Alexakhin</a>, <a href="/search/hep-ex?searchtype=author&query=Alexeev%2C+G">G. Alexeev</a>, <a href="/search/hep-ex?searchtype=author&query=Alimov%2C+L">L. Alimov</a>, <a href="/search/hep-ex?searchtype=author&query=Allakhverdieva%2C+A">A. Allakhverdieva</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=Andreev%2C+V">V. Andreev</a>, <a href="/search/hep-ex?searchtype=author&query=Andreev%2C+V">V. Andreev</a>, <a href="/search/hep-ex?searchtype=author&query=Andronov%2C+E">E. Andronov</a>, <a href="/search/hep-ex?searchtype=author&query=Anikin%2C+Y">Yu. Anikin</a>, <a href="/search/hep-ex?searchtype=author&query=Anischenko%2C+S">S. Anischenko</a>, <a href="/search/hep-ex?searchtype=author&query=Anisenkov%2C+A">A. Anisenkov</a>, <a href="/search/hep-ex?searchtype=author&query=Anosov%2C+V">V. Anosov</a>, <a href="/search/hep-ex?searchtype=author&query=Antokhin%2C+E">E. Antokhin</a>, <a href="/search/hep-ex?searchtype=author&query=Antonov%2C+A">A. Antonov</a>, <a href="/search/hep-ex?searchtype=author&query=Antsupov%2C+S">S. Antsupov</a>, <a href="/search/hep-ex?searchtype=author&query=Anufriev%2C+A">A. Anufriev</a>, <a href="/search/hep-ex?searchtype=author&query=Asadova%2C+K">K. Asadova</a> , et al. (392 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="2404.08317v2-abstract-short" style="display: inline;"> The Spin Physics Detector collaboration proposes to install a universal detector in the second interaction point of the NICA collider under construction (JINR, Dubna) to study the spin structure of the proton and deuteron and other spin-related phenomena using a unique possibility to operate with polarized proton and deuteron beams at a collision energy up to 27 GeV and a luminosity up to… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.08317v2-abstract-full').style.display = 'inline'; document.getElementById('2404.08317v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.08317v2-abstract-full" style="display: none;"> The Spin Physics Detector collaboration proposes to install a universal detector in the second interaction point of the NICA collider under construction (JINR, Dubna) to study the spin structure of the proton and deuteron and other spin-related phenomena using a unique possibility to operate with polarized proton and deuteron beams at a collision energy up to 27 GeV and a luminosity up to $10^{32}$ cm$^{-2}$ s$^{-1}$. As the main goal, the experiment aims to provide access to the gluon TMD PDFs in the proton and deuteron, as well as the gluon transversity distribution and tensor PDFs in the deuteron, via the measurement of specific single and double spin asymmetries using different complementary probes such as charmonia, open charm, and prompt photon production processes. Other polarized and unpolarized physics is possible, especially at the first stage of NICA operation with reduced luminosity and collision energy of the proton and ion beams. This document is dedicated exclusively to technical issues of the SPD setup construction. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.08317v2-abstract-full').style.display = 'none'; document.getElementById('2404.08317v2-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> 28 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Natural Science Review 1 1 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2303.07191">arXiv:2303.07191</a> <span> [<a href="https://arxiv.org/pdf/2303.07191">pdf</a>, <a href="https://arxiv.org/format/2303.07191">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> </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.108.072016">10.1103/PhysRevD.108.072016 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Transverse single-spin asymmetry of charged hadrons at forward and backward rapidity in polarized $p$+$p$, $p$+Al, and $p$+Au collisions at $\sqrt{s_{NN}}=200$ GeV} </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/hep-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/hep-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/hep-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/hep-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/hep-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/hep-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a>, <a href="/search/hep-ex?searchtype=author&query=Blau%2C+D+S">D. S. Blau</a>, <a href="/search/hep-ex?searchtype=author&query=Bok%2C+J+S">J. S. Bok</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+V">V. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Brooks%2C+M+L">M. L. Brooks</a>, <a href="/search/hep-ex?searchtype=author&query=Bryslawskyj%2C+J">J. Bryslawskyj</a> , et al. (297 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="2303.07191v2-abstract-short" style="display: inline;"> Reported here are transverse single-spin asymmetries ($A_{N}$) in the production of charged hadrons as a function of transverse momentum ($p_T$) and Feynman-$x$ ($x_F$) in polarized $p^{\uparrow}$+$p$, $p^{\uparrow}$+Al, and $p^{\uparrow}$+Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV. The measurements have been performed at forward and backward rapidity ($1.4<|畏|<2.4$) over the range of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.07191v2-abstract-full').style.display = 'inline'; document.getElementById('2303.07191v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.07191v2-abstract-full" style="display: none;"> Reported here are transverse single-spin asymmetries ($A_{N}$) in the production of charged hadrons as a function of transverse momentum ($p_T$) and Feynman-$x$ ($x_F$) in polarized $p^{\uparrow}$+$p$, $p^{\uparrow}$+Al, and $p^{\uparrow}$+Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV. The measurements have been performed at forward and backward rapidity ($1.4<|畏|<2.4$) over the range of $1.5<p_{T}<7.0~{\rm GeV}/c$ and $0.04<|x_{F}|<0.2$. A nonzero asymmetry is observed for positively charged hadrons at forward rapidity ($x_F>0$) in $p^{\uparrow}$+$p$ collisions, whereas the $p^{\uparrow}$+Al and $p^{\uparrow}$+Au results show smaller asymmetries. This finding provides new opportunities to investigate the origin of transverse single-spin asymmetries and a tool to study nuclear effects in $p$+$A$ collisions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.07191v2-abstract-full').style.display = 'none'; document.getElementById('2303.07191v2-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 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 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">322 authors from 70 institutions, 13 pages, 9 figures, 13 tables, one appendix, 2015 data. v2 is version accepted for publication in Phys. Rev. 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> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 108, 072016 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2303.07190">arXiv:2303.07190</a> <span> [<a href="https://arxiv.org/pdf/2303.07190">pdf</a>, <a href="https://arxiv.org/format/2303.07190">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> </div> </div> <p class="title is-5 mathjax"> Transverse single-spin asymmetry of midrapidity $蟺^{0}$ and $畏$ mesons in $p$+Au and $p$+Al collisions at $\sqrt{s_{_{NN}}}=$ 200 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/hep-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/hep-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/hep-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/hep-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/hep-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/hep-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a>, <a href="/search/hep-ex?searchtype=author&query=Blau%2C+D+S">D. S. Blau</a>, <a href="/search/hep-ex?searchtype=author&query=Bok%2C+J+S">J. S. Bok</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+V">V. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Brooks%2C+M+L">M. L. Brooks</a>, <a href="/search/hep-ex?searchtype=author&query=Bryslawskyj%2C+J">J. Bryslawskyj</a> , et al. (297 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="2303.07190v2-abstract-short" style="display: inline;"> Presented are the first measurements of the transverse single-spin asymmetries ($A_N$) for neutral pions and eta mesons in $p$+Au and $p$+Al collisions at $\sqrt{s_{_{NN}}}=200$ GeV in the pseudorapidity range $|畏|<$0.35 with the PHENIX detector at the Relativistic Heavy Ion Collider. The asymmetries are consistent with zero, similar to those for midrapidity neutral pions and eta mesons produced i… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.07190v2-abstract-full').style.display = 'inline'; document.getElementById('2303.07190v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.07190v2-abstract-full" style="display: none;"> Presented are the first measurements of the transverse single-spin asymmetries ($A_N$) for neutral pions and eta mesons in $p$+Au and $p$+Al collisions at $\sqrt{s_{_{NN}}}=200$ GeV in the pseudorapidity range $|畏|<$0.35 with the PHENIX detector at the Relativistic Heavy Ion Collider. The asymmetries are consistent with zero, similar to those for midrapidity neutral pions and eta mesons produced in $p$+$p$ collisions. These measurements show no evidence of additional effects that could potentially arise from the more complex partonic environment present in proton-nucleus collisions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.07190v2-abstract-full').style.display = 'none'; document.getElementById('2303.07190v2-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, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 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">322 authors from 70 institutions, 8 pages, 2 figures, 1 table, 2015 data. v2 is version accepted for publication in Phys. Rev. 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/2204.12899">arXiv:2204.12899</a> <span> [<a href="https://arxiv.org/pdf/2204.12899">pdf</a>, <a href="https://arxiv.org/format/2204.12899">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> </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.107.052012">10.1103/PhysRevD.107.052012 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Improving constraints on gluon spin-momentum correlations in transversely polarized protons via midrapidity open-heavy-flavor electrons in $p^{\uparrow}+p$ collisions at $\sqrt{s}=200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/hep-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/hep-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/hep-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/hep-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/hep-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/hep-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a>, <a href="/search/hep-ex?searchtype=author&query=Blau%2C+D+S">D. S. Blau</a>, <a href="/search/hep-ex?searchtype=author&query=Bok%2C+J+S">J. S. Bok</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+V">V. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Brooks%2C+M+L">M. L. Brooks</a>, <a href="/search/hep-ex?searchtype=author&query=Bryslawskyj%2C+J">J. Bryslawskyj</a> , et al. (299 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="2204.12899v2-abstract-short" style="display: inline;"> Polarized proton-proton collisions provide leading-order access to gluons, presenting an opportunity to constrain gluon spin-momentum correlations within transversely polarized protons and enhance our understanding of the three-dimensional structure of the proton. Midrapidity open-heavy-flavor production at $\sqrt{s}=200$ GeV is dominated by gluon-gluon fusion, providing heightened sensitivity to… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2204.12899v2-abstract-full').style.display = 'inline'; document.getElementById('2204.12899v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2204.12899v2-abstract-full" style="display: none;"> Polarized proton-proton collisions provide leading-order access to gluons, presenting an opportunity to constrain gluon spin-momentum correlations within transversely polarized protons and enhance our understanding of the three-dimensional structure of the proton. Midrapidity open-heavy-flavor production at $\sqrt{s}=200$ GeV is dominated by gluon-gluon fusion, providing heightened sensitivity to gluon dynamics relative to other production channels. Transverse single-spin asymmetries of positrons and electrons from heavy-flavor hadron decays are measured at midrapidity using the PHENIX detector at the Relativistic Heavy Ion Collider. These charge-separated measurements are sensitive to gluon correlators that can in principle be related to gluon orbital angular momentum via model calculations. Explicit constraints on gluon correlators are extracted for two separate models, one of which had not been constrained previously. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2204.12899v2-abstract-full').style.display = 'none'; document.getElementById('2204.12899v2-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> 7 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 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">324 authors from 70 institutions, 11 pages, 5 figures, 3 tables, 2015 data. v2 is version accepted for publication in PRD. 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/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/hep-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/hep-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/hep-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/hep-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/hep-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/hep-ex?searchtype=author&query=Beckman%2C+S">S. Beckman</a>, <a href="/search/hep-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/hep-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a>, <a href="/search/hep-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/hep-ex?searchtype=author&query=PHENIX+Collaboration"> PHENIX Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abdulameer%2C+N+J">N. J. Abdulameer</a>, <a href="/search/hep-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Akimoto%2C+R">R. Akimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/hep-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/hep-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/hep-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/hep-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/hep-ex?searchtype=author&query=Beckman%2C+S">S. Beckman</a>, <a href="/search/hep-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/hep-ex?searchtype=author&query=Acharya%2C+U+A">U. A. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/hep-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/hep-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/hep-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/hep-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/hep-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a>, <a href="/search/hep-ex?searchtype=author&query=Blau%2C+D+S">D. S. Blau</a>, <a href="/search/hep-ex?searchtype=author&query=Bok%2C+J+S">J. S. Bok</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+V">V. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Brooks%2C+M+L">M. L. Brooks</a>, <a href="/search/hep-ex?searchtype=author&query=Bryslawskyj%2C+J">J. Bryslawskyj</a>, <a href="/search/hep-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/hep-ex?searchtype=author&query=Acharya%2C+U+A">U. A. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/hep-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/hep-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/hep-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/hep-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/hep-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a>, <a href="/search/hep-ex?searchtype=author&query=Blau%2C+D+S">D. S. Blau</a>, <a href="/search/hep-ex?searchtype=author&query=Bok%2C+J+S">J. S. Bok</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+V">V. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Brooks%2C+M+L">M. L. Brooks</a>, <a href="/search/hep-ex?searchtype=author&query=Bryslawskyj%2C+J">J. Bryslawskyj</a>, <a href="/search/hep-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/hep-ex?searchtype=author&query=Acharya%2C+U+A">U. A. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Al-Bataineh%2C+H">H. Al-Bataineh</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+J">J. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/hep-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/hep-ex?searchtype=author&query=Angerami%2C+A">A. Angerami</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/hep-ex?searchtype=author&query=Averbeck%2C+R">R. Averbeck</a>, <a href="/search/hep-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Baksay%2C+G">G. Baksay</a>, <a href="/search/hep-ex?searchtype=author&query=Baksay%2C+L">L. Baksay</a>, <a href="/search/hep-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/hep-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/hep-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/2111.00577">arXiv:2111.00577</a> <span> [<a href="https://arxiv.org/pdf/2111.00577">pdf</a>, <a href="https://arxiv.org/format/2111.00577">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> </div> </div> <p class="title is-5 mathjax"> Nuclear modification factors of strange mesons measured by PHENIX </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+Y">Ya. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Kotov%2C+D">D. Kotov</a>, <a href="/search/hep-ex?searchtype=author&query=Larionova%2C+D">D. Larionova</a>, <a href="/search/hep-ex?searchtype=author&query=Mitrankov%2C+I">Iu. Mitrankov</a>, <a href="/search/hep-ex?searchtype=author&query=Mitrankova%2C+M">M. Mitrankova</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+V">V. Borisov</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="2111.00577v1-abstract-short" style="display: inline;"> The question of the existence and properties of the quark-gluon plasma (QGP) nowadays are the subject of detailed systematic study. Particles that contain strange quarks can be considered as a great tool to study flavor dependence of the parton energy loss in the QGP and strangeness enhancement. In this paper, we present the most recent PHENIX results on nuclear modification factors of $K^{\pm}$,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.00577v1-abstract-full').style.display = 'inline'; document.getElementById('2111.00577v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.00577v1-abstract-full" style="display: none;"> The question of the existence and properties of the quark-gluon plasma (QGP) nowadays are the subject of detailed systematic study. Particles that contain strange quarks can be considered as a great tool to study flavor dependence of the parton energy loss in the QGP and strangeness enhancement. In this paper, we present the most recent PHENIX results on nuclear modification factors of $K^{\pm}$, $K^{*0}$, $蠁$ mesons as a function of $p_T$ and the number of participants in $p$+$p$, $p$+Al, $^3$He+Au, Cu+Cu, Cu+Au, Au+Au, and U+U collisions at top RHIC energies. The light hadron production at high-$p_T$ is apparently independent on quark content. The coalescence mechanism might be an answer for strangeness and baryon enhancement at moderate $p_T$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.00577v1-abstract-full').style.display = 'none'; document.getElementById('2111.00577v1-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 October, 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">5 pages, 3 figures</span> </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/hep-ex?searchtype=author&query=Acharya%2C+U+A">U. A. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/hep-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/hep-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/hep-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/hep-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/hep-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a>, <a href="/search/hep-ex?searchtype=author&query=Blau%2C+D+S">D. S. Blau</a>, <a href="/search/hep-ex?searchtype=author&query=Bok%2C+J+S">J. S. Bok</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+V">V. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Brooks%2C+M+L">M. L. Brooks</a>, <a href="/search/hep-ex?searchtype=author&query=Bryslawskyj%2C+J">J. Bryslawskyj</a>, <a href="/search/hep-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/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/hep-ex?searchtype=author&query=Acharya%2C+U+A">U. A. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/hep-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayuso%2C+C">C. Ayuso</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/hep-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/hep-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/hep-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/hep-ex?searchtype=author&query=Beckman%2C+S">S. Beckman</a>, <a href="/search/hep-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/hep-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/2011.14187">arXiv:2011.14187</a> <span> [<a href="https://arxiv.org/pdf/2011.14187">pdf</a>, <a href="https://arxiv.org/format/2011.14187">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> </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.103.032007">10.1103/PhysRevD.103.032007 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Transverse momentum dependent forward neutron single spin asymmetries in transversely polarized $p$$+$$p$ collisions at $\sqrt{s}=200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Acharya%2C+U+A">U. A. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/hep-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/hep-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/hep-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/hep-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/hep-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a>, <a href="/search/hep-ex?searchtype=author&query=Blau%2C+D+S">D. S. Blau</a>, <a href="/search/hep-ex?searchtype=author&query=Bok%2C+J+S">J. S. Bok</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+V">V. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Brooks%2C+M+L">M. L. Brooks</a>, <a href="/search/hep-ex?searchtype=author&query=Bryslawskyj%2C+J">J. Bryslawskyj</a>, <a href="/search/hep-ex?searchtype=author&query=Bumazhnov%2C+V">V. Bumazhnov</a> , et al. (289 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="2011.14187v2-abstract-short" style="display: inline;"> In 2015, the PHENIX collaboration has measured very forward ($畏>6.8$) single-spin asymmetries of inclusive neutrons in transversely polarized proton-proton and proton-nucleus collisions at a center of mass energy of 200 GeV. A previous publication from this data set concentrated on the nuclear dependence of such asymmetries. In this measurement the explicit transverse-momentum dependence of inclus… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.14187v2-abstract-full').style.display = 'inline'; document.getElementById('2011.14187v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.14187v2-abstract-full" style="display: none;"> In 2015, the PHENIX collaboration has measured very forward ($畏>6.8$) single-spin asymmetries of inclusive neutrons in transversely polarized proton-proton and proton-nucleus collisions at a center of mass energy of 200 GeV. A previous publication from this data set concentrated on the nuclear dependence of such asymmetries. In this measurement the explicit transverse-momentum dependence of inclusive neutron single spin asymmetries for proton-proton collisions is extracted using a bootstrapping-unfolding technique on the transverse momenta. This explicit transverse-momentum dependence will help improve the understanding of the mechanisms that create these asymmetries. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.14187v2-abstract-full').style.display = 'none'; document.getElementById('2011.14187v2-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 February, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">314 authors from 66 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 103, 032007 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.14170">arXiv:2011.14170</a> <span> [<a href="https://arxiv.org/pdf/2011.14170">pdf</a>, <a href="https://arxiv.org/format/2011.14170">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> </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.103.052009">10.1103/PhysRevD.103.052009 <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 midrapidity $蟺^0$ and $畏$ mesons in polarized $p$$+$$p$ collisions at $\sqrt{s}=200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Acharya%2C+U+A">U. A. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/hep-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/hep-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/hep-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/hep-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+Y">Y. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Bichon%2C+L">L. Bichon</a>, <a href="/search/hep-ex?searchtype=author&query=Blankenship%2C+B">B. Blankenship</a>, <a href="/search/hep-ex?searchtype=author&query=Blau%2C+D+S">D. S. Blau</a>, <a href="/search/hep-ex?searchtype=author&query=Bok%2C+J+S">J. S. Bok</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+V">V. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Brooks%2C+M+L">M. L. Brooks</a>, <a href="/search/hep-ex?searchtype=author&query=Bryslawskyj%2C+J">J. Bryslawskyj</a>, <a href="/search/hep-ex?searchtype=author&query=Bumazhnov%2C+V">V. Bumazhnov</a> , et al. (289 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="2011.14170v2-abstract-short" style="display: inline;"> We present a measurement of the transverse single-spin asymmetry for $蟺^0$ and $畏$ mesons in $p^\uparrow$$+$$p$ collisions in the pseudorapidity range $|畏|<0.35$ and at a center-of-mass energy of 200 GeV with the PHENIX detector at the Relativistic Heavy Ion Collider. In comparison with previous measurements in this kinematic region, these results have a factor of 3 smaller uncertainties. As hadro… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.14170v2-abstract-full').style.display = 'inline'; document.getElementById('2011.14170v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.14170v2-abstract-full" style="display: none;"> We present a measurement of the transverse single-spin asymmetry for $蟺^0$ and $畏$ mesons in $p^\uparrow$$+$$p$ collisions in the pseudorapidity range $|畏|<0.35$ and at a center-of-mass energy of 200 GeV with the PHENIX detector at the Relativistic Heavy Ion Collider. In comparison with previous measurements in this kinematic region, these results have a factor of 3 smaller uncertainties. As hadrons, $蟺^0$ and $畏$ mesons are sensitive to both initial- and final-state nonperturbative effects for a mix of parton flavors. Comparisons of the differences in their transverse single-spin asymmetries have the potential to disentangle the possible effects of strangeness, isospin, or mass. These results can constrain the twist-3 trigluon collinear correlation function as well as the gluon Sivers function. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.14170v2-abstract-full').style.display = 'none'; document.getElementById('2011.14170v2-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 February, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">314 authors from 66 institutions, 10 pages, 5 figures, 2 tables, 2015 data. v2 is version accepted for publication in Phys. Rev. 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 103, 052009 (2021) </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/hep-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Akimoto%2C+R">R. Akimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+J">J. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/hep-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+X">X. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/hep-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Baublis%2C+V">V. Baublis</a>, <a href="/search/hep-ex?searchtype=author&query=Baumann%2C+C">C. Baumann</a>, <a href="/search/hep-ex?searchtype=author&query=Baumgart%2C+S">S. Baumgart</a>, <a href="/search/hep-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/hep-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/hep-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/hep-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/hep-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Akimoto%2C+R">R. Akimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/hep-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/hep-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/hep-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/hep-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/hep-ex?searchtype=author&query=Beckman%2C+S">S. Beckman</a>, <a href="/search/hep-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/hep-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/2005.14273">arXiv:2005.14273</a> <span> [<a href="https://arxiv.org/pdf/2005.14273">pdf</a>, <a href="https://arxiv.org/format/2005.14273">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> </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.102.072008">10.1103/PhysRevD.102.072008 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Polarization and cross section of midrapidity J/$蠄$ production in proton-proton collisions at $\sqrt{s}=510$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Akimoto%2C+R">R. Akimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Alfred%2C+M">M. Alfred</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/hep-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bandara%2C+N+S">N. S. Bandara</a>, <a href="/search/hep-ex?searchtype=author&query=Bannier%2C+B">B. Bannier</a>, <a href="/search/hep-ex?searchtype=author&query=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Bazilevsky%2C+A">A. Bazilevsky</a>, <a href="/search/hep-ex?searchtype=author&query=Beaumier%2C+M">M. Beaumier</a>, <a href="/search/hep-ex?searchtype=author&query=Beckman%2C+S">S. Beckman</a>, <a href="/search/hep-ex?searchtype=author&query=Belmont%2C+R">R. Belmont</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+A">A. Berdnikov</a>, <a href="/search/hep-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="2005.14273v2-abstract-short" style="display: inline;"> The PHENIX experiment has measured the spin alignment for inclusive $J/蠄\rightarrow e^{+}e^{-}$ decays in $p$+$p$ collisions at $\sqrt{s}=510$ GeV at midrapidity. The angular distributions have been measured in three different polarization frames, and the three decay angular coefficients have been extracted in a full two-dimensional analysis. Previously, PHENIX saw large longitudinal net polarizat… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.14273v2-abstract-full').style.display = 'inline'; document.getElementById('2005.14273v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.14273v2-abstract-full" style="display: none;"> The PHENIX experiment has measured the spin alignment for inclusive $J/蠄\rightarrow e^{+}e^{-}$ decays in $p$+$p$ collisions at $\sqrt{s}=510$ GeV at midrapidity. The angular distributions have been measured in three different polarization frames, and the three decay angular coefficients have been extracted in a full two-dimensional analysis. Previously, PHENIX saw large longitudinal net polarization at forward rapidity at the same collision energy. This analysis at midrapidity, complementary to the previous PHENIX results, sees no sizable polarization in the measured transverse momentum range of $0.0<p_T<10.0$ GeV/$c$. The results are consistent with a previous one-dimensional analysis at midrapidity at $\sqrt{s}=200$ GeV. The transverse-momentum-dependent cross section for midrapidity $J/蠄$ production has additionally been measured, and after comparison to world data we find a simple logarithmic dependence of the cross section on $\sqrt{s}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.14273v2-abstract-full').style.display = 'none'; document.getElementById('2005.14273v2-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, 15 figures, 1 table, 2013 data. v1 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, 072008 (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/hep-ex?searchtype=author&query=Acharya%2C+U">U. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Adare%2C+A">A. Adare</a>, <a href="/search/hep-ex?searchtype=author&query=Afanasiev%2C+S">S. Afanasiev</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Ajitanand%2C+N+N">N. N. Ajitanand</a>, <a href="/search/hep-ex?searchtype=author&query=Akiba%2C+Y">Y. Akiba</a>, <a href="/search/hep-ex?searchtype=author&query=Akimoto%2C+R">R. Akimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Al-Bataineh%2C+H">H. Al-Bataineh</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+J">J. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Al-Ta%27ani%2C+H">H. Al-Ta'ani</a>, <a href="/search/hep-ex?searchtype=author&query=Angerami%2C+A">A. Angerami</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Apadula%2C+N">N. Apadula</a>, <a href="/search/hep-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+H">H. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/hep-ex?searchtype=author&query=Atomssa%2C+E+T">E. T. Atomssa</a>, <a href="/search/hep-ex?searchtype=author&query=Averbeck%2C+R">R. Averbeck</a>, <a href="/search/hep-ex?searchtype=author&query=Awes%2C+T+C">T. C. Awes</a>, <a href="/search/hep-ex?searchtype=author&query=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/hep-ex?searchtype=author&query=Babintsev%2C+V">V. Babintsev</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+M">M. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Baksay%2C+G">G. Baksay</a>, <a href="/search/hep-ex?searchtype=author&query=Baksay%2C+L">L. Baksay</a>, <a href="/search/hep-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/1708.04650">arXiv:1708.04650</a> <span> [<a href="https://arxiv.org/pdf/1708.04650">pdf</a>, <a href="https://arxiv.org/format/1708.04650">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> </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/10.1140/epjc/s10052-017-5501-6">10.1140/epjc/s10052-017-5501-6 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A New Look at the $Y$ Tetraquarks and $惟_c$ Baryons in the Diquark Model </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Ali%2C+A">Ahmed Ali</a>, <a href="/search/hep-ex?searchtype=author&query=Maiani%2C+L">Luciano Maiani</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+A+V">Anatoly V. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+I">Ishtiaq Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aslam%2C+M+J">M. Jamil Aslam</a>, <a href="/search/hep-ex?searchtype=author&query=Parkhomenko%2C+A+Y">Alexander Ya. Parkhomenko</a>, <a href="/search/hep-ex?searchtype=author&query=Polosa%2C+A+D">Antonio D. Polosa</a>, <a href="/search/hep-ex?searchtype=author&query=Rehman%2C+A">Abdur Rehman</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="1708.04650v2-abstract-short" style="display: inline;"> We analyze the hidden charm $P$-wave tetraquarks in the diquark model, using an effective Hamiltonian incorporating the dominant spin-spin, spin-orbit and tensor interactions. We compare with other $P$-wave system such as $P$-wave charmonia and the newly discovered $惟_c$ baryons, analysed recently in this framework. Given the uncertain experimental situation on the $Y$ states, we allow for differe… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1708.04650v2-abstract-full').style.display = 'inline'; document.getElementById('1708.04650v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1708.04650v2-abstract-full" style="display: none;"> We analyze the hidden charm $P$-wave tetraquarks in the diquark model, using an effective Hamiltonian incorporating the dominant spin-spin, spin-orbit and tensor interactions. We compare with other $P$-wave system such as $P$-wave charmonia and the newly discovered $惟_c$ baryons, analysed recently in this framework. Given the uncertain experimental situation on the $Y$ states, we allow for different spectra and discuss the related parameters in the diquark model. In addition to the presently observed ones, we expect many more states in the supermultiplet of $L=1$ diquarkonia, whose $J^{PC}$ quantum numbers and masses are worked out, using the parameters from the currently preferred $Y$-states pattern. The existence of these new resonances would be a decisive footprint of the underlying diquark dynamics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1708.04650v2-abstract-full').style.display = 'none'; document.getElementById('1708.04650v2-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 December, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 August, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2017. </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">Revised and extended to accommodate referee comments. Added a table and references. Accepted for publication in the EPJC</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> DESY 17-104 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1307.1653">arXiv:1307.1653</a> <span> [<a href="https://arxiv.org/pdf/1307.1653">pdf</a>, <a href="https://arxiv.org/ps/1307.1653">ps</a>, <a href="https://arxiv.org/format/1307.1653">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"> Observation of a narrow baryon resonance with positive strangeness formed in $K^+$Xe collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=DIANA+Collaboration"> DIANA Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Barmin%2C+V+V">V. V. Barmin</a>, <a href="/search/hep-ex?searchtype=author&query=Asratyan%2C+A+E">A. E. Asratyan</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+V+S">V. S. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/hep-ex?searchtype=author&query=Davidenko%2C+G+V">G. V. Davidenko</a>, <a href="/search/hep-ex?searchtype=author&query=Dolgolenko%2C+A+G">A. G. Dolgolenko</a>, <a href="/search/hep-ex?searchtype=author&query=Guaraldo%2C+C">C. Guaraldo</a>, <a href="/search/hep-ex?searchtype=author&query=Kubantsev%2C+M+A">M. A. Kubantsev</a>, <a href="/search/hep-ex?searchtype=author&query=Larin%2C+I+F">I. F. Larin</a>, <a href="/search/hep-ex?searchtype=author&query=Matveev%2C+V+A">V. A. Matveev</a>, <a href="/search/hep-ex?searchtype=author&query=Shebanov%2C+V+A">V. A. Shebanov</a>, <a href="/search/hep-ex?searchtype=author&query=Shishov%2C+N+N">N. N. Shishov</a>, <a href="/search/hep-ex?searchtype=author&query=Sokolov%2C+L+I">L. I. Sokolov</a>, <a href="/search/hep-ex?searchtype=author&query=Tarasov%2C+V+V">V. V. Tarasov</a>, <a href="/search/hep-ex?searchtype=author&query=Tumanov%2C+G+K">G. K. Tumanov</a>, <a href="/search/hep-ex?searchtype=author&query=Verebryusov%2C+V+S">V. S. Verebryusov</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="1307.1653v3-abstract-short" style="display: inline;"> The charge-exchange reaction K^+ Xe --> K^0 p Xe' is investigated using the data of the DIANA experiment. The distribution of the pK^0 effective mass shows a prominent enhancement near 1538 MeV formed by \sim 80 events above the background, whose width is consistent with being entirely due to the experimental resolution. Under the selections based on a simulation of K^+Xe collisions, the statistic… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.1653v3-abstract-full').style.display = 'inline'; document.getElementById('1307.1653v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1307.1653v3-abstract-full" style="display: none;"> The charge-exchange reaction K^+ Xe --> K^0 p Xe' is investigated using the data of the DIANA experiment. The distribution of the pK^0 effective mass shows a prominent enhancement near 1538 MeV formed by \sim 80 events above the background, whose width is consistent with being entirely due to the experimental resolution. Under the selections based on a simulation of K^+Xe collisions, the statistical significance of the signal reaches 5.5蟽. We interpret this observation as strong evidence for formation of a pentaquark baryon with positive strangeness, 螛^+(uudd\bar{s}), in the charge-exchange reaction K^+ n --> K^0 p on a bound neutron. The mass of the 螛^+ baryon is measured as m(螛^+) = 1538+-2 MeV. Using the ratio between the numbers of resonant and non-resonant charge-exchange events in the peak region, the intrinsic width of this baryon resonance is determined as 螕(螛^+) = 0.34+-0.10 MeV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.1653v3-abstract-full').style.display = 'none'; document.getElementById('1307.1653v3-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> 18 April, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 July, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2013. </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">19 pages, 8 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C89, 045204 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0909.4666">arXiv:0909.4666</a> <span> [<a href="https://arxiv.org/pdf/0909.4666">pdf</a>, <a href="https://arxiv.org/ps/0909.4666">ps</a>, <a href="https://arxiv.org/format/0909.4666">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> </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/10.1134/S1063778810070094">10.1134/S1063778810070094 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Experimental search for radiative decays of the pentaquark baryon 螛^+(1540) </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Barmin%2C+V+V">V. V. Barmin</a>, <a href="/search/hep-ex?searchtype=author&query=Asratyan%2C+A+E">A. E. Asratyan</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+V+S">V. S. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/hep-ex?searchtype=author&query=Davidenko%2C+G+V">G. V. Davidenko</a>, <a href="/search/hep-ex?searchtype=author&query=Dolgolenko%2C+A+G">A. G. Dolgolenko</a>, <a href="/search/hep-ex?searchtype=author&query=Guaraldo%2C+C">C. Guaraldo</a>, <a href="/search/hep-ex?searchtype=author&query=Kubantsev%2C+M+A">M. A. Kubantsev</a>, <a href="/search/hep-ex?searchtype=author&query=Larin%2C+I+F">I. F. Larin</a>, <a href="/search/hep-ex?searchtype=author&query=Matveev%2C+V+A">V. A. Matveev</a>, <a href="/search/hep-ex?searchtype=author&query=Shebanov%2C+V+A">V. A. Shebanov</a>, <a href="/search/hep-ex?searchtype=author&query=Shishov%2C+N+N">N. N. Shishov</a>, <a href="/search/hep-ex?searchtype=author&query=Sokolov%2C+L+I">L. I. Sokolov</a>, <a href="/search/hep-ex?searchtype=author&query=Tumanov%2C+G+K">G. K. Tumanov</a>, <a href="/search/hep-ex?searchtype=author&query=Verebryusov%2C+V+S">V. S. Verebryusov</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="0909.4666v1-abstract-short" style="display: inline;"> The data on the reactions K^+Xe --> K^0 纬X and K^+Xe --> K^+ 纬X, obtained with the bubble chamber DIANA, have been analyzed for possible radiative decays of the 螛^+(1540) baryon: 螛^+ --> K^0 p 纬and 螛^+ --> K^+ n 纬. No signals have been observed, and we derive the upper limits 螕(螛^+ --> K^0 p 纬) / 螕(螛^+ --> K^0 p) < 0.032 and 螕(螛^+ --> K^+ n 纬) / 螕(螛^+ --> K^+ n) < 0.041 which, using our previous… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0909.4666v1-abstract-full').style.display = 'inline'; document.getElementById('0909.4666v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0909.4666v1-abstract-full" style="display: none;"> The data on the reactions K^+Xe --> K^0 纬X and K^+Xe --> K^+ 纬X, obtained with the bubble chamber DIANA, have been analyzed for possible radiative decays of the 螛^+(1540) baryon: 螛^+ --> K^0 p 纬and 螛^+ --> K^+ n 纬. No signals have been observed, and we derive the upper limits 螕(螛^+ --> K^0 p 纬) / 螕(螛^+ --> K^0 p) < 0.032 and 螕(螛^+ --> K^+ n 纬) / 螕(螛^+ --> K^+ n) < 0.041 which, using our previous measurement of 螕(螛^+ --> KN) = (0.39+-0.10) MeV, translate to 螕(螛^+ --> K^0 p 纬) < 8 keV and 螕(螛^+ --> K^+ n 纬) < 11 keV at 90% confidence level. We have also measured the cross sections of K^+ -induced reactions involving emission of a neutral pion: 蟽(K^+n --> K^0 p 蟺^0) = (68+-18) \mub and 蟽(K^+N --> K^+ N 蟺^0) = (30+-8) \mub for incident K^+ momentum of 640 MeV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0909.4666v1-abstract-full').style.display = 'none'; document.getElementById('0909.4666v1-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 September, 2009; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2009. </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</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Atom.Nucl.73:1164-1167,2010 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0909.4183">arXiv:0909.4183</a> <span> [<a href="https://arxiv.org/pdf/0909.4183">pdf</a>, <a href="https://arxiv.org/ps/0909.4183">ps</a>, <a href="https://arxiv.org/format/0909.4183">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> </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/10.1134/S1063778810070100">10.1134/S1063778810070100 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Formation of a narrow baryon resonance with positive strangeness in K^+ collisions with Xe nuclei </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Barmin%2C+V+V">V. V. Barmin</a>, <a href="/search/hep-ex?searchtype=author&query=Asratyan%2C+A+E">A. E. Asratyan</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+V+S">V. S. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/hep-ex?searchtype=author&query=Davidenko%2C+G+V">G. V. Davidenko</a>, <a href="/search/hep-ex?searchtype=author&query=Dolgolenko%2C+A+G">A. G. Dolgolenko</a>, <a href="/search/hep-ex?searchtype=author&query=Guaraldo%2C+C">C. Guaraldo</a>, <a href="/search/hep-ex?searchtype=author&query=Kubantsev%2C+M+A">M. A. Kubantsev</a>, <a href="/search/hep-ex?searchtype=author&query=Larin%2C+I+F">I. F. Larin</a>, <a href="/search/hep-ex?searchtype=author&query=Matveev%2C+V+A">V. A. Matveev</a>, <a href="/search/hep-ex?searchtype=author&query=Shebanov%2C+V+A">V. A. Shebanov</a>, <a href="/search/hep-ex?searchtype=author&query=Shishov%2C+N+N">N. N. Shishov</a>, <a href="/search/hep-ex?searchtype=author&query=Sokolov%2C+L+I">L. I. Sokolov</a>, <a href="/search/hep-ex?searchtype=author&query=Tumanov%2C+G+K">G. K. Tumanov</a>, <a href="/search/hep-ex?searchtype=author&query=Verebryusov%2C+V+S">V. S. Verebryusov</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="0909.4183v1-abstract-short" style="display: inline;"> The data on the charge-exchange reaction K^+Xe --> K^0 p Xe, obtained with the bubble chamber DIANA, are reanalyzed using increased statistics and updated selections. Our previous evidence for formation of a narrow pK^0 resonance with mass near 1538 MeV is confirmed and reinforced. The statistical significance of the signal reaches some 8蟽(6蟽) when estimated as S/\sqrt{B} (S/\sqrt{B+S}). The mas… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0909.4183v1-abstract-full').style.display = 'inline'; document.getElementById('0909.4183v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0909.4183v1-abstract-full" style="display: none;"> The data on the charge-exchange reaction K^+Xe --> K^0 p Xe, obtained with the bubble chamber DIANA, are reanalyzed using increased statistics and updated selections. Our previous evidence for formation of a narrow pK^0 resonance with mass near 1538 MeV is confirmed and reinforced. The statistical significance of the signal reaches some 8蟽(6蟽) when estimated as S/\sqrt{B} (S/\sqrt{B+S}). The mass and intrinsic width of the 螛^+ baryon are measured as m = (1538+-2) MeV and 螕= (0.39+-0.10) MeV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0909.4183v1-abstract-full').style.display = 'none'; document.getElementById('0909.4183v1-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, 2009; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2009. </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">13 pages, 9 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Atom.Nucl.73:1168-1175,2010 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0706.4165">arXiv:0706.4165</a> <span> [<a href="https://arxiv.org/pdf/0706.4165">pdf</a>, <a href="https://arxiv.org/ps/0706.4165">ps</a>, <a href="https://arxiv.org/format/0706.4165">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 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/10.1103/PhysRevD.76.093009">10.1103/PhysRevD.76.093009 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Probing new physics in the Neutrinoless double beta decay using electron angular correlation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Ali%2C+A">A. Ali</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+A+V">A. V. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Zhuridov%2C+D+V">D. V. Zhuridov</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="0706.4165v4-abstract-short" style="display: inline;"> The angular correlation of the electrons emitted in the neutrinoless double beta decay ($0\nu2尾$) is presented using a general Lorentz invariant effective Lagrangian for the leptonic and hadronic charged weak currents. We show that the coefficient $K$ in the angular correlation $d螕/d\cos 胃\propto (1-K\cos 胃)$ is essentially independent of the nuclear matrix element models and present its numerical… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0706.4165v4-abstract-full').style.display = 'inline'; document.getElementById('0706.4165v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0706.4165v4-abstract-full" style="display: none;"> The angular correlation of the electrons emitted in the neutrinoless double beta decay ($0\nu2尾$) is presented using a general Lorentz invariant effective Lagrangian for the leptonic and hadronic charged weak currents. We show that the coefficient $K$ in the angular correlation $d螕/d\cos 胃\propto (1-K\cos 胃)$ is essentially independent of the nuclear matrix element models and present its numerical values for the five nuclei of interest ($^{76}{Ge}$, $^{82}{Se}$, $^{100}{Mo}$, $^{130}{Te}$, and $^{136}{Xe}$), assuming that the $0\nu2尾$-decays in these nuclei are induced solely by a light Majorana neutrino, $谓_M$. This coefficient varies between $K=0.81$ (for the $^{76}{Ge}$ nucleus) and $K=0.88$ (for the $^{82}{Se}$ and $^{100}{Mo}$ nuclei), calculated taking into account the effects from the nucleon recoil, the $S$ and $P$-waves for the outgoing electrons and the electron mass. Deviation of $K$ from its values derived here would indicate the presence of New Physics (NP) in addition to a light Majorana neutrino, and we work out the angular coefficients in several $谓_M + {NP}$ scenarios for the $^{76}{Ge}$ nucleus. As an illustration of the correlations among the $0\nu2尾$ observables (half-life $T_{1/2}$, the coefficient $K$, and the effective Majorana neutrino mass $|< m>|$) and the parameters of the underlying NP model, we analyze the left-right symmetric models, taking into account current phenomenological bounds on the right-handed $W_R$-boson mass and the left-right mixing parameter $味$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0706.4165v4-abstract-full').style.display = 'none'; document.getElementById('0706.4165v4-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 April, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 June, 2007; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2007. </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">37 pages, 5 figures; crucial error in Appendix A is corrected that reveals higher significance of the scalar part due to the P-wave effect, the updates match Erratum submitted to PRD. arXiv admin note: text overlap with arXiv:hep-ph/0606072</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> DESY 07-097 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.D76:093009,2007 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/0606072">arXiv:hep-ph/0606072</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/0606072">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/0606072">ps</a>, <a href="https://arxiv.org/format/hep-ph/0606072">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> </div> </div> <p class="title is-5 mathjax"> Neutrinoless double beta decay: Electron angular correlation as a probe of new physics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Ali%2C+A">A. Ali</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+A+V">A. V. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Zhuridov%2C+D+V">D. V. Zhuridov</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="hep-ph/0606072v2-abstract-short" style="display: inline;"> The angular distribution of the final electrons in the so-called long range mechanism of the neutrinoless double beta decay ($0\nu2尾$) is derived for the general Lorentz invariant effective Lagrangian. Possible theories beyond the SM are classified from their effects on the angular distribution, which could be used to discriminate among various particle physics models inducing $0\nu2尾$ decays. H… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0606072v2-abstract-full').style.display = 'inline'; document.getElementById('hep-ph/0606072v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/0606072v2-abstract-full" style="display: none;"> The angular distribution of the final electrons in the so-called long range mechanism of the neutrinoless double beta decay ($0\nu2尾$) is derived for the general Lorentz invariant effective Lagrangian. Possible theories beyond the SM are classified from their effects on the angular distribution, which could be used to discriminate among various particle physics models inducing $0\nu2尾$ decays. However, additional input on the effective couplings will be required to single out the light Majorana-neutrino mechanism. Alternatively, measurements of the effective neutrino mass and angular distribution in $0\nu2尾$ decays can be used to test the correlations among the parameters of the underlying physics models. This is illustrated for the left-right symmetric model, taking into account current phenomenological bounds. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0606072v2-abstract-full').style.display = 'none'; document.getElementById('hep-ph/0606072v2-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> 12 September, 2006; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 June, 2006; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2006. </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">16 pages, 5 figures, requires style files 12lomcon.sty and cite.sty; section 3 and figures corrected and revised; several minor changes in the text; more references added and updated</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> DESY 06-086 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ex/0603017">arXiv:hep-ex/0603017</a> <span> [<a href="https://arxiv.org/pdf/hep-ex/0603017">pdf</a>, <a href="https://arxiv.org/ps/hep-ex/0603017">ps</a>, <a href="https://arxiv.org/format/hep-ex/0603017">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> </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/10.1134/S106377880701005X">10.1134/S106377880701005X <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Further evidence for formation of a narrow baryon resonance with positive strangeness in K+ collisions with Xe nuclei </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Barmin%2C+V+V">V. V. Barmin</a>, <a href="/search/hep-ex?searchtype=author&query=Asratyan%2C+A+E">A. E. Asratyan</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+V+S">V. S. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/hep-ex?searchtype=author&query=Davidenko%2C+G+V">G. V. Davidenko</a>, <a href="/search/hep-ex?searchtype=author&query=Dolgolenko%2C+A+G">A. G. Dolgolenko</a>, <a href="/search/hep-ex?searchtype=author&query=Guaraldo%2C+C">C. Guaraldo</a>, <a href="/search/hep-ex?searchtype=author&query=Kubantsev%2C+M+A">M. A. Kubantsev</a>, <a href="/search/hep-ex?searchtype=author&query=Larin%2C+I+F">I. F. Larin</a>, <a href="/search/hep-ex?searchtype=author&query=Matveev%2C+V+A">V. A. Matveev</a>, <a href="/search/hep-ex?searchtype=author&query=Shebanov%2C+V+A">V. A. Shebanov</a>, <a href="/search/hep-ex?searchtype=author&query=Shishov%2C+N+N">N. N. Shishov</a>, <a href="/search/hep-ex?searchtype=author&query=Sokolov%2C+L+I">L. I. Sokolov</a>, <a href="/search/hep-ex?searchtype=author&query=Tumanov%2C+G+K">G. K. Tumanov</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="hep-ex/0603017v2-abstract-short" style="display: inline;"> We have continued our investigation of the charge-exchange reaction K^+ Xe --> K^0 p Xe' in the bubble chamber DIANA. In agreement with our previous results based on part of the present statistics, formation of a narrow p K^0 resonance with mass of 1537+-2 MeV/c^2 is observed in the elementary transition K^+ n --> K^0 p on a neutron bound in the Xenon nucleus. Visible width of the peak is consis… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ex/0603017v2-abstract-full').style.display = 'inline'; document.getElementById('hep-ex/0603017v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ex/0603017v2-abstract-full" style="display: none;"> We have continued our investigation of the charge-exchange reaction K^+ Xe --> K^0 p Xe' in the bubble chamber DIANA. In agreement with our previous results based on part of the present statistics, formation of a narrow p K^0 resonance with mass of 1537+-2 MeV/c^2 is observed in the elementary transition K^+ n --> K^0 p on a neutron bound in the Xenon nucleus. Visible width of the peak is consistent with being entirely due to instrumental resolution and allows to place an upper limit on its intrinsic width: 螕< 9 MeV/c^2. A more precise estimate of the resonance intrinsic width, 螕= 0.36+-0.11 MeV/c^2, is obtained from the ratio between the numbers of resonant and non-resonant charge-exchange events. The signal is observed in a restricted interval of incident K^+ momentum, that is consistent with smearing of a narrow p K^0 resonance by Fermi motion of the target neutron. Statistical significance of the signal is some 7.3, 5.3, and 4.3 standard deviations for the estimators S/sqrt{B}, S/sqrt{S+B}, and S/sqrt{S+2B}, respectively. This observation confirms and reinforces our earlier results, and offers strong evidence for formation of a pentaquark baryon with positive strangeness in the charge-exchange reaction K^+ n --> K^0 p on a bound neutron. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ex/0603017v2-abstract-full').style.display = 'none'; document.getElementById('hep-ex/0603017v2-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 April, 2006; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 March, 2006; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2006. </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">13 pages, 8 figures, some chenges in text and references, more precise estimate of Theta(1540) to add, submitted to Phys.Atom.Nucl(Yad.Fiz.)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Atom.Nucl. 70 (2007) 35-43 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ex/0304040">arXiv:hep-ex/0304040</a> <span> [<a href="https://arxiv.org/pdf/hep-ex/0304040">pdf</a>, <a href="https://arxiv.org/ps/hep-ex/0304040">ps</a>, <a href="https://arxiv.org/format/hep-ex/0304040">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> </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/10.1134/1.1611587">10.1134/1.1611587 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of a baryon resonance with positive strangeness in K+ collisions with Xe nuclei </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Barmin%2C+V+V">V. V. Barmin</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+V+S">V. S. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Davidenko%2C+G+V">G. V. Davidenko</a>, <a href="/search/hep-ex?searchtype=author&query=Dolgolenko%2C+A+G">A. G. Dolgolenko</a>, <a href="/search/hep-ex?searchtype=author&query=Guaraldo%2C+C">C. Guaraldo</a>, <a href="/search/hep-ex?searchtype=author&query=Larin%2C+I+F">I. F. Larin</a>, <a href="/search/hep-ex?searchtype=author&query=Matveev%2C+V+A">V. A. Matveev</a>, <a href="/search/hep-ex?searchtype=author&query=Petrascu%2C+C">C. Petrascu</a>, <a href="/search/hep-ex?searchtype=author&query=Shebanov%2C+V+A">V. A. Shebanov</a>, <a href="/search/hep-ex?searchtype=author&query=Shishov%2C+N+N">N. N. Shishov</a>, <a href="/search/hep-ex?searchtype=author&query=Sokolov%2C+L+I">L. I. Sokolov</a>, <a href="/search/hep-ex?searchtype=author&query=Tumanov%2C+G+K">G. K. Tumanov</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="hep-ex/0304040v4-abstract-short" style="display: inline;"> The status of our investigation of low-energy $K^+$Xe collisions in the Xenon bubble chamber DIANA is reported. In the charge-exchange reaction $K^+Xe \to K^0 p Xe'$ the spectrum of $K^0 p$ effective mass shows a resonant enhancement with $M = 1539 \pm 2$ MeV/c$^2$ and $螕\le 9 MeV/c$^2$. The statistical significance of the enhancement is near $4.4蟽$. The mass and width of the observed resonance… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ex/0304040v4-abstract-full').style.display = 'inline'; document.getElementById('hep-ex/0304040v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ex/0304040v4-abstract-full" style="display: none;"> The status of our investigation of low-energy $K^+$Xe collisions in the Xenon bubble chamber DIANA is reported. In the charge-exchange reaction $K^+Xe \to K^0 p Xe'$ the spectrum of $K^0 p$ effective mass shows a resonant enhancement with $M = 1539 \pm 2$ MeV/c$^2$ and $螕\le 9 MeV/c$^2$. The statistical significance of the enhancement is near $4.4蟽$. The mass and width of the observed resonance are consistent with expectations for the lightest member of the anti-decuplet of exotic pentaquark baryons, as predicted in the framework of the chiral soliton model. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ex/0304040v4-abstract-full').style.display = 'none'; document.getElementById('hep-ex/0304040v4-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> 18 September, 2003; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 April, 2003; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2003. </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">9 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Atom.Nucl.66:1715-1718,2003; Yad.Fiz.66:1763-1766,2003 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ex/9902007">arXiv:hep-ex/9902007</a> <span> [<a href="https://arxiv.org/pdf/hep-ex/9902007">pdf</a>, <a href="https://arxiv.org/ps/hep-ex/9902007">ps</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> </div> </div> <p class="title is-5 mathjax"> The program of research at hadronic beams of ITEP accelerator. (Collection of experimental proposals) </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Editors"> Editors</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Vladimirski%2C+V+V">V. V. Vladimirski</a>, <a href="/search/hep-ex?searchtype=author&query=Kanavets%2C+V+P">V. P. Kanavets</a>, <a href="/search/hep-ex?searchtype=author&query=by%2C+V+T+S+P+p">V. T. Smolyankin. Proposals presented by</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Alekseev%2C+I+G">I. G. Alekseev</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+V+S">V. S. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Vorobiev%2C+L+S">L. S. Vorobiev</a>, <a href="/search/hep-ex?searchtype=author&query=Dolgolenko%2C+A+G">A. G. Dolgolenko</a>, <a href="/search/hep-ex?searchtype=author&query=Kanavets%2C+V+P">V. P. Kanavets</a>, <a href="/search/hep-ex?searchtype=author&query=Kiselev%2C+Y+T">Yu. T. Kiselev</a>, <a href="/search/hep-ex?searchtype=author&query=Kolybasov%2C+V+M">V. M. Kolybasov</a>, <a href="/search/hep-ex?searchtype=author&query=Kosov%2C+M+V">M. V. Kosov</a>, <a href="/search/hep-ex?searchtype=author&query=Krutenkova%2C+A+P">A. P. Krutenkova</a>, <a href="/search/hep-ex?searchtype=author&query=Kulikov%2C+V+V">V. V. Kulikov</a>, <a href="/search/hep-ex?searchtype=author&query=Leksin%2C+G+A">G. A. Leksin</a>, <a href="/search/hep-ex?searchtype=author&query=Pivnyuk%2C+N+A">N. A. Pivnyuk</a>, <a href="/search/hep-ex?searchtype=author&query=Ryltsov%2C+V+V">V. V. Ryltsov</a>, <a href="/search/hep-ex?searchtype=author&query=Svirida%2C+D+N">D. N. Svirida</a>, <a href="/search/hep-ex?searchtype=author&query=Smirnitski%2C+V+A">V. A. Smirnitski</a>, <a href="/search/hep-ex?searchtype=author&query=Smolyankin%2C+V+T">V. T. Smolyankin</a>, <a href="/search/hep-ex?searchtype=author&query=Sumachev%2C+V+L+S+V+V">V. L. Stolin V. V. Sumachev</a>, <a href="/search/hep-ex?searchtype=author&query=Trebuhovski%2C+Y+V">Yu. V. Trebuhovski</a>, <a href="/search/hep-ex?searchtype=author&query=Chernyshev%2C+V+P">V. P. Chernyshev</a> , et al. (1 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="hep-ex/9902007v1-abstract-short" style="display: inline;"> This is a collection of proposals of experiments at hadronic beams of 10 GeV accelerator, situated at the Institute of Theoretical and Experimental Physics (Moscow, Russia). The proposals were presented by the leaders of several ITEP experimental groups and include selected problems of hadron-hadron (exotic states, scalar mesons, electomagnetic form factors, polarization phenomena etc.) and hadr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ex/9902007v1-abstract-full').style.display = 'inline'; document.getElementById('hep-ex/9902007v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ex/9902007v1-abstract-full" style="display: none;"> This is a collection of proposals of experiments at hadronic beams of 10 GeV accelerator, situated at the Institute of Theoretical and Experimental Physics (Moscow, Russia). The proposals were presented by the leaders of several ITEP experimental groups and include selected problems of hadron-hadron (exotic states, scalar mesons, electomagnetic form factors, polarization phenomena etc.) and hadron-nucleon interactions (flucton and nuclear matter properties, hadron properties inside nuclei, interactions at small distances). Most of proposals are united by an idea of a common magnetic spectrometer with LiH(D) and polarized targets, wich could be built on the base of an existing 3m magnet. Some of them also refer to the intrinsic accelerator beam and to the new ion ring. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ex/9902007v1-abstract-full').style.display = 'none'; document.getElementById('hep-ex/9902007v1-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 February, 1999; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 1999. </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">66 pages, 26 figures, in Russian</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ex/9810032">arXiv:hep-ex/9810032</a> <span> [<a href="https://arxiv.org/pdf/hep-ex/9810032">pdf</a>, <a href="https://arxiv.org/ps/hep-ex/9810032">ps</a>, <a href="https://arxiv.org/format/hep-ex/9810032">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> </div> </div> <p class="title is-5 mathjax"> Study of eta pi- production by pions in the Coulomb field </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=VES+collaboration"> VES collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Amelin%2C+D+V">D. V. Amelin</a>, <a href="/search/hep-ex?searchtype=author&query=Berdnikov%2C+E+B">E. B. Berdnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Bityukov%2C+S+I">S. I. Bityukov</a>, <a href="/search/hep-ex?searchtype=author&query=Borisov%2C+G+V">G. V. Borisov</a>, <a href="/search/hep-ex?searchtype=author&query=Dzhelyadin%2C+R+I">R. I. Dzhelyadin</a>, <a href="/search/hep-ex?searchtype=author&query=Dorofeev%2C+V+A">V. A. Dorofeev</a>, <a href="/search/hep-ex?searchtype=author&query=Ekimov%2C+A+V">A. V. Ekimov</a>, <a href="/search/hep-ex?searchtype=author&query=Gouz%2C+Y+P">Yu. P. Gouz</a>, <a href="/search/hep-ex?searchtype=author&query=Konoplyannikov%2C+A+K">A. K. Konoplyannikov</a>, <a href="/search/hep-ex?searchtype=author&query=Karyukhin%2C+A+N">A. N. Karyukhin</a>, <a href="/search/hep-ex?searchtype=author&query=Kachaev%2C+I+A">I. A. Kachaev</a>, <a href="/search/hep-ex?searchtype=author&query=Khokhlov%2C+Y+A">Yu. A. Khokhlov</a>, <a href="/search/hep-ex?searchtype=author&query=Likhoded%2C+S+A">S. A. Likhoded</a>, <a href="/search/hep-ex?searchtype=author&query=Matveyev%2C+V+D">V. D. Matveyev</a>, <a href="/search/hep-ex?searchtype=author&query=Ostankov%2C+A+P">A. P. Ostankov</a>, <a href="/search/hep-ex?searchtype=author&query=Ryabchikov%2C+D+I">D. I. Ryabchikov</a>, <a href="/search/hep-ex?searchtype=author&query=Solovianov%2C+O+V">O. V. Solovianov</a>, <a href="/search/hep-ex?searchtype=author&query=Solodkov%2C+A+A">A. A. Solodkov</a>, <a href="/search/hep-ex?searchtype=author&query=Starchenko%2C+E+A">E. A. Starchenko</a>, <a href="/search/hep-ex?searchtype=author&query=Vishnevsky%2C+N+K">N. K. Vishnevsky</a>, <a href="/search/hep-ex?searchtype=author&query=Vlassov%2C+E+V">E. V. Vlassov</a>, <a href="/search/hep-ex?searchtype=author&query=Zaitsev%2C+A+M">A. M. Zaitsev</a>, <a href="/search/hep-ex?searchtype=author&query=Sekhniaidze%2C+G+G">G. G. Sekhniaidze</a>, <a href="/search/hep-ex?searchtype=author&query=Tskhadadze%2C+E+G">E. G. Tskhadadze</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="hep-ex/9810032v2-abstract-short" style="display: inline;"> The production of eta pi - system at low mass by the pi- beam in the Coulomb field of Be nuclei was studied. The cross section of the reaction pi- Be --> eta pi- Be was compared to the experimental data on the decay eta --> pi+ pi- gamma and to the theoretical predictions. </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ex/9810032v2-abstract-full" style="display: none;"> The production of eta pi - system at low mass by the pi- beam in the Coulomb field of Be nuclei was studied. The cross section of the reaction pi- Be --> eta pi- Be was compared to the experimental data on the decay eta --> pi+ pi- gamma and to the theoretical predictions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ex/9810032v2-abstract-full').style.display = 'none'; document.getElementById('hep-ex/9810032v2-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 October, 1998; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 October, 1998; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 1998. </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">11 pages, 5 figures, gzipped tar file</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> IFVE-98-62 </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 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