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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/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/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/1805.04084">arXiv:1805.04084</a> <span> [<a href="https://arxiv.org/pdf/1805.04084">pdf</a>, <a href="https://arxiv.org/format/1805.04084">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.123.022301">10.1103/PhysRevLett.123.022301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Beam-energy and centrality dependence of direct-photon emission from ultra-relativistic heavy-ion collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <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=Alfred%2C+M">M. Alfred</a>, <a href="/search/hep-ex?searchtype=author&query=Al-Jamel%2C+A">A. Al-Jamel</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=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/hep-ex?searchtype=author&query=Armendariz%2C+R">R. Armendariz</a>, <a href="/search/hep-ex?searchtype=author&query=Aronson%2C+S+H">S. H. Aronson</a>, <a href="/search/hep-ex?searchtype=author&query=Asai%2C+J">J. Asai</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> , et al. (648 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="1805.04084v2-abstract-short" style="display: inline;"> The PHENIX collaboration presents first measurements of low-momentum ($0.4<p_T<3$ GeV/$c$) direct-photon yields from Au$+$Au collisions at $\sqrt{s_{_{NN}}}$=39 and 62.4 GeV. For both beam energies the direct-photon yields are substantially enhanced with respect to expectations from prompt processes, similar to the yields observed in Au$+$Au collisions at $\sqrt{s_{_{NN}}}$=200. Analyzing the phot… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.04084v2-abstract-full').style.display = 'inline'; document.getElementById('1805.04084v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1805.04084v2-abstract-full" style="display: none;"> The PHENIX collaboration presents first measurements of low-momentum ($0.4<p_T<3$ GeV/$c$) direct-photon yields from Au$+$Au collisions at $\sqrt{s_{_{NN}}}$=39 and 62.4 GeV. For both beam energies the direct-photon yields are substantially enhanced with respect to expectations from prompt processes, similar to the yields observed in Au$+$Au collisions at $\sqrt{s_{_{NN}}}$=200. Analyzing the photon yield as a function of the experimental observable $dN_{\rm ch}/d畏$ reveals that the low-momentum ($>$1\,GeV/$c$) direct-photon yield $dN_纬^{\rm dir}/d畏$ is a smooth function of $dN_{\rm ch}/d畏$ and can be well described as proportional to $(dN_{\rm ch}/d畏)^伪$ with $伪{\approx}1.25$. This scaling behavior holds for a wide range of beam energies at the Relativistic Heavy Ion Collider and the Large Hadron Collider, for centrality selected samples, as well as for different, $A$$+$$A$ collision systems. At a given beam energy the scaling also holds for high $p_T$ ($>5$\,GeV/$c$) but when results from different collision energies are compared, an additional $\sqrt{s_{_{NN}}}$-dependent multiplicative factor is needed to describe the integrated-direct-photon yield. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.04084v2-abstract-full').style.display = 'none'; document.getElementById('1805.04084v2-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 June, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 May, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2018. </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">673 authors from 82 institutions, 10 pages, 4 figures. v2 is version accepted for publication in 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> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 123, 022301 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1805.04066">arXiv:1805.04066</a> <span> [<a href="https://arxiv.org/pdf/1805.04066">pdf</a>, <a href="https://arxiv.org/format/1805.04066">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.98.054902">10.1103/PhysRevC.98.054902 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Low-momentum direct photon measurement in Cu$+$Cu 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=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=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=Aoki%2C+K">K. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Armendariz%2C+R">R. Armendariz</a>, <a href="/search/hep-ex?searchtype=author&query=Aronson%2C+S+H">S. H. Aronson</a>, <a href="/search/hep-ex?searchtype=author&query=Asai%2C+J">J. Asai</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=Bagoly%2C+A">A. Bagoly</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=Baldisseri%2C+A">A. Baldisseri</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=Barnes%2C+P+D">P. D. Barnes</a>, <a href="/search/hep-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a> , et al. (426 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="1805.04066v3-abstract-short" style="display: inline;"> We have measured direct photons for $p_T<5~$GeV/$c$ in minimum bias and 0\%--40\% most central events at midrapidity for Cu$+$Cu collisions at $\sqrt{s_{_{NN}}}=200$ GeV. The $e^{+}e^{-}$ contribution from quasi-real direct virtual photons has been determined as an excess over the known hadronic contributions in the $e^{+}e^{-}$ mass distribution. A clear enhancement of photons over the binary sca… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.04066v3-abstract-full').style.display = 'inline'; document.getElementById('1805.04066v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1805.04066v3-abstract-full" style="display: none;"> We have measured direct photons for $p_T<5~$GeV/$c$ in minimum bias and 0\%--40\% most central events at midrapidity for Cu$+$Cu collisions at $\sqrt{s_{_{NN}}}=200$ GeV. The $e^{+}e^{-}$ contribution from quasi-real direct virtual photons has been determined as an excess over the known hadronic contributions in the $e^{+}e^{-}$ mass distribution. A clear enhancement of photons over the binary scaled $p$$+$$p$ fit is observed for $p_T<4$ GeV/$c$ in Cu$+$Cu data. The $p_T$ spectra are consistent with the Au$+$Au data covering a similar number of participants. The inverse slopes of the exponential fits to the excess after subtraction of the $p$$+$$p$ baseline are 285$\pm$53(stat)$\pm$57(syst)~MeV/$c$ and 333$\pm$72(stat)$\pm$45(syst)~MeV/$c$ for minimum bias and 0\%--40\% most central events, respectively. The rapidity density, $dN/dy$, of photons demonstrates the same power law as a function of $dN_{\rm ch}/d畏$ observed in Au$+$Au at the same collision energy. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.04066v3-abstract-full').style.display = 'none'; document.getElementById('1805.04066v3-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, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 May, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2018. </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">453 authors from 74 institutions, 12 pages, 8 figures, 2 tables. v3 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 98, 054902 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1803.01749">arXiv:1803.01749</a> <span> [<a href="https://arxiv.org/pdf/1803.01749">pdf</a>, <a href="https://arxiv.org/ps/1803.01749">ps</a>, <a href="https://arxiv.org/format/1803.01749">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.99.054903">10.1103/PhysRevC.99.054903 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of two-particle correlations with respect to second- and third-order event planes in Au$+$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=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=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=Aoki%2C+K">K. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</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=Bagoly%2C+A">A. Bagoly</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=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a>, <a href="/search/hep-ex?searchtype=author&query=Basye%2C+A+T">A. T. Basye</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> , et al. (432 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="1803.01749v2-abstract-short" style="display: inline;"> We present measurements of azimuthal correlations of charged hadron pairs in $\sqrt{s_{_{NN}}}=200$ GeV Au$+$Au collisions for the trigger and associated particle transverse-momentum ranges of $1<p_T^t<10$~GeV/$c$ and $0.5<p_T^a<10$~GeV/$c$. After subtraction of an underlying event using a model that includes higher-order azimuthal anisotropy $v_2$, $v_3$, and $v_4$, the away-side yield of the hig… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.01749v2-abstract-full').style.display = 'inline'; document.getElementById('1803.01749v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1803.01749v2-abstract-full" style="display: none;"> We present measurements of azimuthal correlations of charged hadron pairs in $\sqrt{s_{_{NN}}}=200$ GeV Au$+$Au collisions for the trigger and associated particle transverse-momentum ranges of $1<p_T^t<10$~GeV/$c$ and $0.5<p_T^a<10$~GeV/$c$. After subtraction of an underlying event using a model that includes higher-order azimuthal anisotropy $v_2$, $v_3$, and $v_4$, the away-side yield of the highest trigger-\pt ($p_T^t>4$~GeV/$c$) correlations is suppressed compared to that of correlations measured in $p$$+$$p$ collisions. At the lowest associated particle $p_T$ ($0.5<p_T^a<1$ GeV/$c$), the away-side shape and yield are modified relative to those in $p$$+$$p$ collisions. These observations are consistent with the scenario of radiative-jet energy loss. For the low-$p_T$ trigger correlations ($2<p_T^t<4$ GeV/$c$), a finite away-side yield exists and we explore the dependence of the shape of the away-side within the context of an underlying-event model. Correlations are also studied differentially versus event-plane angle $唯_2$ and $唯_3$. The angular correlations show an asymmetry when selecting the sign of the difference between the trigger-particle azimuthal angle and the $唯_2$ event plane. This asymmetry and the measured suppression of the pair yield out of plane is consistent with a path-length-dependent energy loss. No $唯_3$ dependence can be resolved within experimental uncertainties. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.01749v2-abstract-full').style.display = 'none'; document.getElementById('1803.01749v2-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 April, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 March, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2018. </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">457 authors, 36 pages, 34 figures, 1 table, 2007 data. v2 is version accepted for publication in Phys. Rev. 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 99, 054903 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1711.09003">arXiv:1711.09003</a> <span> [<a href="https://arxiv.org/pdf/1711.09003">pdf</a>, <a href="https://arxiv.org/format/1711.09003">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.98.014912">10.1103/PhysRevC.98.014912 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of emission angle anisotropy via long-range angular correlations with high $p_T$ hadrons in $d$$+$Au and $p$$+$$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=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=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=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=Bagoly%2C+A">A. Bagoly</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=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/hep-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a>, <a href="/search/hep-ex?searchtype=author&query=Basye%2C+A+T">A. T. Basye</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> , et al. (449 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="1711.09003v2-abstract-short" style="display: inline;"> We present measurements of two-particle angular correlations between high-transverse-momentum ($2<p_T<11$ GeV/$c$) $蟺^0$ observed at midrapidity ($|畏|<0.35$) and particles produced either at forward ($3.1<畏<3.9$) or backward ($-3.7<畏<-3.1$) rapidity in $d$$+$Au and $p$$+$$p$ collisions at $\sqrt{s_{_{NN}}}=200$ GeV. The azimuthal angle correlations for particle pairs with this large rapidity gap i… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1711.09003v2-abstract-full').style.display = 'inline'; document.getElementById('1711.09003v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1711.09003v2-abstract-full" style="display: none;"> We present measurements of two-particle angular correlations between high-transverse-momentum ($2<p_T<11$ GeV/$c$) $蟺^0$ observed at midrapidity ($|畏|<0.35$) and particles produced either at forward ($3.1<畏<3.9$) or backward ($-3.7<畏<-3.1$) rapidity in $d$$+$Au and $p$$+$$p$ collisions at $\sqrt{s_{_{NN}}}=200$ GeV. The azimuthal angle correlations for particle pairs with this large rapidity gap in the Au-going direction exhibit a ridge-like structure that persists up to $p_T{\approx}6$ GeV/$c$ and which strongly depends on collision centrality, which is a similar characteristic to the hydrodynamical particle flow in A+A collisions. The ridge-like structure is absent in the $d$-going direction as well as in $p$$+$$p$ collisions, in the transverse-momentum range studied. The results indicate that the ridge-like structure is shifted in the Au-going direction toward more central collisions, similar to the charged-particle pseudorapidity distributions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1711.09003v2-abstract-full').style.display = 'none'; document.getElementById('1711.09003v2-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 July, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 November, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">474 authors, 18 pages, 13 figures, 1 table. v2 is version accepted for publication in Phys. Rev. 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 98, 014912 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1507.06273">arXiv:1507.06273</a> <span> [<a href="https://arxiv.org/pdf/1507.06273">pdf</a>, <a href="https://arxiv.org/format/1507.06273">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.115.142301">10.1103/PhysRevLett.115.142301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurements of elliptic and triangular flow in high-multiplicity $^{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=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=Alfred%2C+M">M. Alfred</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=Andrews%2C+K+R">K. R. Andrews</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=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Appelt%2C+E">E. Appelt</a>, <a href="/search/hep-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/hep-ex?searchtype=author&query=Armendariz%2C+R">R. Armendariz</a>, <a href="/search/hep-ex?searchtype=author&query=Aronson%2C+S+H">S. H. Aronson</a>, <a href="/search/hep-ex?searchtype=author&query=Asai%2C+J">J. Asai</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> , et al. (605 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="1507.06273v2-abstract-short" style="display: inline;"> We present the first measurement of elliptic ($v_2$) and triangular ($v_3$) flow in high-multiplicity $^{3}$He$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV. Two-particle correlations, where the particles have a large separation in pseudorapidity, are compared in $^{3}$He$+$Au and in $p$$+$$p$ collisions and indicate that collective effects dominate the second and third Fourier components for the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1507.06273v2-abstract-full').style.display = 'inline'; document.getElementById('1507.06273v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1507.06273v2-abstract-full" style="display: none;"> We present the first measurement of elliptic ($v_2$) and triangular ($v_3$) flow in high-multiplicity $^{3}$He$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV. Two-particle correlations, where the particles have a large separation in pseudorapidity, are compared in $^{3}$He$+$Au and in $p$$+$$p$ collisions and indicate that collective effects dominate the second and third Fourier components for the correlations observed in the $^{3}$He$+$Au system. The collective behavior is quantified in terms of elliptic $v_2$ and triangular $v_3$ anisotropy coefficients measured with respect to their corresponding event planes. The $v_2$ values are comparable to those previously measured in $d$$+$Au collisions at the same nucleon-nucleon center-of-mass energy. Comparison with various theoretical predictions are made, including to models where the hot spots created by the impact of the three $^{3}$He nucleons on the Au nucleus expand hydrodynamically to generate the triangular flow. The agreement of these models with data may indicate the formation of low-viscosity quark-gluon plasma even in these small collision systems. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1507.06273v2-abstract-full').style.display = 'none'; document.getElementById('1507.06273v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 August, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 July, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2015. </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">630 authors, 9 pages, 4 figures, 2 tables. v2 is the version accepted for publication 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> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 115, 142301 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1406.3541">arXiv:1406.3541</a> <span> [<a href="https://arxiv.org/pdf/1406.3541">pdf</a>, <a href="https://arxiv.org/format/1406.3541">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.90.072008">10.1103/PhysRevD.90.072008 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Cross Section and Transverse Single-Spin Asymmetry of $畏$ Mesons in $p^{\uparrow}+p$ Collisions at $\sqrt{s}=200$ GeV at Forward Rapidity </p> <p class="authors"> <span class="search-hit">Authors:</span> <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=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=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>, <a href="/search/hep-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a> , et al. (460 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="1406.3541v2-abstract-short" style="display: inline;"> We present a measurement of the cross section and transverse single-spin asymmetry ($A_N$) for $畏$ mesons at large pseudorapidity from $\sqrt{s}=200$~GeV $p^{\uparrow}+p$ collisions. The measured cross section for $0.5<p_T<5.0$~GeV/$c$ and $3.0<|畏|<3.8$ is well described by a next-to-leading-order perturbative-quantum-chromodynamics calculation. The asymmetries $A_N$ have been measured as a functi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.3541v2-abstract-full').style.display = 'inline'; document.getElementById('1406.3541v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1406.3541v2-abstract-full" style="display: none;"> We present a measurement of the cross section and transverse single-spin asymmetry ($A_N$) for $畏$ mesons at large pseudorapidity from $\sqrt{s}=200$~GeV $p^{\uparrow}+p$ collisions. The measured cross section for $0.5<p_T<5.0$~GeV/$c$ and $3.0<|畏|<3.8$ is well described by a next-to-leading-order perturbative-quantum-chromodynamics calculation. The asymmetries $A_N$ have been measured as a function of Feynman-$x$ ($x_F$) from $0.2<|x_{F}|<0.7$, as well as transverse momentum ($p_T$) from $1.0<p_T<4.5$~GeV/$c$. The asymmetry averaged over positive $x_F$ is $\langle{A_{N}}\rangle=0.061{\pm}0.014$. The results are consistent with prior transverse single-spin measurements of forward $畏$ and $蟺^{0}$ mesons at various energies in overlapping $x_F$ ranges. Comparison of different particle species can help to determine the origin of the large observed asymmetries in $p^{\uparrow}+p$ collisions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.3541v2-abstract-full').style.display = 'none'; document.getElementById('1406.3541v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 September, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 June, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2014. </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">484 authors, 13 pages, 11 figures, 4 tables, 2008 data. v2 is version accepted by 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> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1312.1995">arXiv:1312.1995</a> <span> [<a href="https://arxiv.org/pdf/1312.1995">pdf</a>, <a href="https://arxiv.org/ps/1312.1995">ps</a>, <a href="https://arxiv.org/format/1312.1995">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 transverse-single-spin asymmetries for midrapidity and forward-rapidity production of hadrons in polarized p+p collisions at $\sqrt{s}=$200 and 62.4 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <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=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=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=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/hep-ex?searchtype=author&query=Asai%2C+J">J. Asai</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=Baldisseri%2C+A">A. Baldisseri</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=Barnes%2C+P+D">P. D. Barnes</a>, <a href="/search/hep-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a> , et al. (426 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="1312.1995v1-abstract-short" style="display: inline;"> Measurements of transverse-single-spin asymmetries ($A_{N}$) in $p$$+$$p$ collisions at $\sqrt{s}=$62.4 and 200 GeV with the PHENIX detector at RHIC are presented. At midrapidity, $A_{N}$ is measured for neutral pion and eta mesons reconstructed from diphoton decay, and at forward rapidities, neutral pions are measured using both diphotons and electromagnetic clusters. The neutral-pion measurement… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1312.1995v1-abstract-full').style.display = 'inline'; document.getElementById('1312.1995v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1312.1995v1-abstract-full" style="display: none;"> Measurements of transverse-single-spin asymmetries ($A_{N}$) in $p$$+$$p$ collisions at $\sqrt{s}=$62.4 and 200 GeV with the PHENIX detector at RHIC are presented. At midrapidity, $A_{N}$ is measured for neutral pion and eta mesons reconstructed from diphoton decay, and at forward rapidities, neutral pions are measured using both diphotons and electromagnetic clusters. The neutral-pion measurement of $A_{N}$ at midrapidity is consistent with zero with uncertainties a factor of 20 smaller than previous publications, which will lead to improved constraints on the gluon Sivers function. At higher rapidities, where the valence quark distributions are probed, the data exhibit sizable asymmetries. In comparison with previous measurements in this kinematic region, the new data extend the kinematic coverage in $\sqrt{s}$ and $p_T$, and it is found that the asymmetries depend only weakly on $\sqrt{s}$. The origin of the forward $A_{N}$ is presently not understood quantitatively. The extended reach to higher $p_T$ probes the transition between transverse momentum dependent effects at low $p_T$ and multi-parton dynamics at high $p_T$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1312.1995v1-abstract-full').style.display = 'none'; document.getElementById('1312.1995v1-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 December, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">451 authors, 16 pages, 11 figures, and 10 tables. Submitted to Phys. Rev. D. Plain text data tables 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/1210.6683">arXiv:1210.6683</a> <span> [<a href="https://arxiv.org/pdf/1210.6683">pdf</a>, <a href="https://arxiv.org/ps/1210.6683">ps</a>, <a href="https://arxiv.org/format/1210.6683">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"> Erratum: Measurement of transverse single-spin asymmetries for J/psi production in polarized p+p collisions at sqrt(s)=200 GeV [Phys. Rev. D 82, 112008 (2010)] </p> <p class="authors"> <span class="search-hit">Authors:</span> <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=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=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/hep-ex?searchtype=author&query=Asai%2C+J">J. Asai</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=Baldisseri%2C+A">A. Baldisseri</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=Barnes%2C+P+D">P. D. Barnes</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="1210.6683v1-abstract-short" style="display: inline;"> We previously reported [Phys. Rev. D 82, 112008 (2010)] measurements of transverse single-spin asymmetries, A_N, in J/psi production from transversely polarized p+p collisions at sqrt(s)=200 GeV with data taken by the PHENIX experiment at the Relativistic Heavy Ion Collider in 2006 and 2008. Subsequently, we have found errors in the analysis procedures for the 2008 data, which resulted in an erron… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1210.6683v1-abstract-full').style.display = 'inline'; document.getElementById('1210.6683v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1210.6683v1-abstract-full" style="display: none;"> We previously reported [Phys. Rev. D 82, 112008 (2010)] measurements of transverse single-spin asymmetries, A_N, in J/psi production from transversely polarized p+p collisions at sqrt(s)=200 GeV with data taken by the PHENIX experiment at the Relativistic Heavy Ion Collider in 2006 and 2008. Subsequently, we have found errors in the analysis procedures for the 2008 data, which resulted in an erroneous value for the extracted A_N. The errors affected the sorting of events into the correct left/right and forward/backward bins. This produced an incorrect value for the 2008 result, but the 2006 result is unaffected. We have conducted two independent reanalyses with these errors corrected, and we present here the corrected values for the 2008 data and the combined results for 2006 and 2008. The new combined spin asymmetry in the forward region is A_N = -0.026+/-0.026(stat)+/-0.003(sys). Since this asymmetry is consistent with zero, we no longer claim that our results suggest a possible non-zero trigluon correlation function in transversely polarized protons. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1210.6683v1-abstract-full').style.display = 'none'; document.getElementById('1210.6683v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 October, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2012. </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">431 authors from 62 institutions, 3 pages, 2 figures, and 3 tables. Erratum submitted to Physical Review D</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1209.3283">arXiv:1209.3283</a> <span> [<a href="https://arxiv.org/pdf/1209.3283">pdf</a>, <a href="https://arxiv.org/ps/1209.3283">ps</a>, <a href="https://arxiv.org/format/1209.3283">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/PhysRevD.88.032006">10.1103/PhysRevD.88.032006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Inclusive cross section and single-transverse-spin asymmetry for very forward neutron production 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=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=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=Aoki%2C+K">K. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Asai%2C+J">J. Asai</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=Baldisseri%2C+A">A. Baldisseri</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=Barnes%2C+P+D">P. D. Barnes</a>, <a href="/search/hep-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a>, <a href="/search/hep-ex?searchtype=author&query=Basye%2C+A+T">A. T. Basye</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Batsouli%2C+S">S. Batsouli</a> , et al. (358 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="1209.3283v1-abstract-short" style="display: inline;"> The energy dependence of the single-transverse-spin asymmetry, A_N, and the cross section for neutron production at very forward angles were measured in the PHENIX experiment at RHIC for polarized p+p collisions at sqrt(s)=200 GeV. The neutrons were observed in forward detectors covering an angular range of up to 2.2 mrad. We report results for neutrons with momentum fraction of x_F=0.45 to 1.0. T… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1209.3283v1-abstract-full').style.display = 'inline'; document.getElementById('1209.3283v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1209.3283v1-abstract-full" style="display: none;"> The energy dependence of the single-transverse-spin asymmetry, A_N, and the cross section for neutron production at very forward angles were measured in the PHENIX experiment at RHIC for polarized p+p collisions at sqrt(s)=200 GeV. The neutrons were observed in forward detectors covering an angular range of up to 2.2 mrad. We report results for neutrons with momentum fraction of x_F=0.45 to 1.0. The energy dependence of the measured cross sections were consistent with x_F scaling, compared to measurements by an ISR experiment which measured neutron production in unpolarized p+p collisions at sqrt(s)=30.6--62.7 GeV. The cross sections for large x_F neutron production for p+p collisions, as well as those in e+p collisions measured at HERA, are described by a pion exchange mechanism. The observed forward neutron asymmetries were large, reaching A_N=-0.08+/-0.02 for x_F=0.8; the measured backward asymmetries, for negative x_F, were consistent with zero. The observed asymmetry for forward neutron production is discussed within the pion exchange framework, with interference between the spin-flip amplitude due to the pion exchange and nonflip amplitudes from all Reggeon exchanges. Within the pion exchange description, the measured neutron asymmetry is sensitive to the contribution of other Reggeon exchanges even for small amplitudes. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1209.3283v1-abstract-full').style.display = 'none'; document.getElementById('1209.3283v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 September, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2012. </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, 16 pages, 18 figures, 6 tables. Submitted to 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 88, 032006 (2013) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1205.5533">arXiv:1205.5533</a> <span> [<a href="https://arxiv.org/pdf/1205.5533">pdf</a>, <a href="https://arxiv.org/ps/1205.5533">ps</a>, <a href="https://arxiv.org/format/1205.5533">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.86.072008">10.1103/PhysRevD.86.072008 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Direct-Photon Production in p+p Collisions at sqrt(s)=200 GeV at Midrapidity </p> <p class="authors"> <span class="search-hit">Authors:</span> <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=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=Aoki%2C+K">K. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Asai%2C+J">J. Asai</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=Baldisseri%2C+A">A. Baldisseri</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=Barnes%2C+P+D">P. D. Barnes</a>, <a href="/search/hep-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a>, <a href="/search/hep-ex?searchtype=author&query=Basye%2C+A+T">A. T. Basye</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Batsouli%2C+S">S. Batsouli</a> , et al. (358 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="1205.5533v1-abstract-short" style="display: inline;"> The differential cross section for the production of direct photons in p+p collisions at sqrt(s)=200 GeV at midrapidity was measured in the PHENIX detector at the Relativistic Heavy Ion Collider. Inclusive-direct photons were measured in the transverse-momentum range from 5.5--25 GeV/c, extending the range beyond previous measurements. Event structure was studied with an isolation criterion. Next-… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1205.5533v1-abstract-full').style.display = 'inline'; document.getElementById('1205.5533v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1205.5533v1-abstract-full" style="display: none;"> The differential cross section for the production of direct photons in p+p collisions at sqrt(s)=200 GeV at midrapidity was measured in the PHENIX detector at the Relativistic Heavy Ion Collider. Inclusive-direct photons were measured in the transverse-momentum range from 5.5--25 GeV/c, extending the range beyond previous measurements. Event structure was studied with an isolation criterion. Next-to-leading-order perturbative-quantum-chromodynamics calculations give a good description of the spectrum. When the cross section is expressed versus x_T, the PHENIX data are seen to be in agreement with measurements from other experiments at different center-of-mass energies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1205.5533v1-abstract-full').style.display = 'none'; document.getElementById('1205.5533v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 May, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2012. </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">PHENIX Collaboration, 383 authors, 16 pages, 14 figures, 7 tables. Submitted to 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> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1204.0754">arXiv:1204.0754</a> <span> [<a href="https://arxiv.org/pdf/1204.0754">pdf</a>, <a href="https://arxiv.org/ps/1204.0754">ps</a>, <a href="https://arxiv.org/format/1204.0754">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.86.024909">10.1103/PhysRevC.86.024909 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Nuclear-Modification Factor for Open-Heavy-Flavor Production at Forward Rapidity in Cu+Cu 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=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=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=Aoki%2C+K">K. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Armendariz%2C+R">R. Armendariz</a>, <a href="/search/hep-ex?searchtype=author&query=Aronson%2C+S+H">S. H. Aronson</a>, <a href="/search/hep-ex?searchtype=author&query=Asai%2C+J">J. Asai</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=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=Baldisseri%2C+A">A. Baldisseri</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=Barnes%2C+P+D">P. D. Barnes</a>, <a href="/search/hep-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Batsouli%2C+S">S. Batsouli</a> , et al. (351 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="1204.0754v1-abstract-short" style="display: inline;"> Background: Heavy-flavor production in p+p collisions tests perturbative-quantum-chromodynamics (pQCD) calculations. Modification of heavy-flavor production in heavy-ion collisions relative to binary-collision scaling from p+p results, quantified with the nuclear-modification factor (R_AA), provides information on both cold- and hot-nuclear-matter effects. Purpose: Determine transverse-momentum,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1204.0754v1-abstract-full').style.display = 'inline'; document.getElementById('1204.0754v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1204.0754v1-abstract-full" style="display: none;"> Background: Heavy-flavor production in p+p collisions tests perturbative-quantum-chromodynamics (pQCD) calculations. Modification of heavy-flavor production in heavy-ion collisions relative to binary-collision scaling from p+p results, quantified with the nuclear-modification factor (R_AA), provides information on both cold- and hot-nuclear-matter effects. Purpose: Determine transverse-momentum, pt, spectra and the corresponding R_AA for muons from heavy-flavor mesons decay in p+p and Cu+Cu collisions at sqrt(s_NN)=200 GeV and y=1.65. Method: Results are obtained using the semi-leptonic decay of heavy-flavor mesons into negative muons. The PHENIX muon-arm spectrometers measure the p_T spectra of inclusive muon candidates. Backgrounds, primarily due to light hadrons, are determined with a Monte-Carlo calculation using a set of input hadron distributions tuned to match measured-hadron distributions in the same detector and statistically subtracted. Results: The charm-production cross section in p+p collisions at sqrt{s}=200 GeV, integrated over pt and in the rapidity range 1.4<y<1.9 is found to be dsigma_ccbar/dy = 0.139 +/- 0.029 (stat) ^{+0.051}_{-0.058} (syst) mb. This result is consistent with calculations and with expectations based on the corresponding midrapidity charm-production cross section measured earlier by PHENIX. The R_AA for heavy-flavor muons in Cu+Cu collisions is measured in three centrality intervals for 1<pt<4 GeV/c. Suppression relative to binary-collision scaling (R_AA<1) increases with centrality. Conclusions: Within experimental and theoretical uncertainties, the measured heavy-flavor yield in p+p collisions is consistent with state-of-the-art pQCD calculations. Suppression in central Cu+Cu collisions suggests the presence of significant cold-nuclear-matter effects and final-state energy loss. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1204.0754v1-abstract-full').style.display = 'none'; document.getElementById('1204.0754v1-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 April, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2012. </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">376 authors, 18 pages, 14 figures, 5 tables. Submitted to Phys. Rev. C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are publicly available at http://www.phenix.bnl.gov/phenix/WWW/info/data/ppg123_data.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 86, 024909 (2012) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1202.4020">arXiv:1202.4020</a> <span> [<a href="https://arxiv.org/pdf/1202.4020">pdf</a>, <a href="https://arxiv.org/ps/1202.4020">ps</a>, <a href="https://arxiv.org/format/1202.4020">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.86.092006">10.1103/PhysRevD.86.092006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Cross sections and double-helicity asymmetries of midrapidity inclusive charged hadrons in p+p collisions at sqrt(s)=62.4 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <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=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=Aoki%2C+K">K. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Asai%2C+J">J. Asai</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=Baldisseri%2C+A">A. Baldisseri</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=Barnes%2C+P+D">P. D. Barnes</a>, <a href="/search/hep-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a>, <a href="/search/hep-ex?searchtype=author&query=Basye%2C+A+T">A. T. Basye</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Batsouli%2C+S">S. Batsouli</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="1202.4020v1-abstract-short" style="display: inline;"> Unpolarized cross sections and double-helicity asymmetries of single-inclusive positive and negative charged hadrons at midrapidity from p+p collisions at sqrt(s)=62.4 GeV are presented. The PHENIX measurements for 1.0 < p_T < 4.5 GeV/c are consistent with perturbative QCD calculations at next-to-leading order in the strong coupling constant, alpha_s. Resummed pQCD calculations including terms wit… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1202.4020v1-abstract-full').style.display = 'inline'; document.getElementById('1202.4020v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1202.4020v1-abstract-full" style="display: none;"> Unpolarized cross sections and double-helicity asymmetries of single-inclusive positive and negative charged hadrons at midrapidity from p+p collisions at sqrt(s)=62.4 GeV are presented. The PHENIX measurements for 1.0 < p_T < 4.5 GeV/c are consistent with perturbative QCD calculations at next-to-leading order in the strong coupling constant, alpha_s. Resummed pQCD calculations including terms with next-to-leading-log accuracy, yielding reduced theoretical uncertainties, also agree with the data. The double-helicity asymmetry, sensitive at leading order to the gluon polarization in a momentum-fraction range of 0.05 ~< x_gluon ~< 0.2, is consistent with recent global parameterizations disfavoring large gluon polarization. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1202.4020v1-abstract-full').style.display = 'none'; document.getElementById('1202.4020v1-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> 17 February, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2012. </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">PHENIX Collaboration. 447 authors, 12 pages, 5 figures, 5 tables. Submitted to Physical Review D</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1105.1966">arXiv:1105.1966</a> <span> [<a href="https://arxiv.org/pdf/1105.1966">pdf</a>, <a href="https://arxiv.org/ps/1105.1966">ps</a>, <a href="https://arxiv.org/format/1105.1966">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.85.092004">10.1103/PhysRevD.85.092004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Ground and excited charmonium state production 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=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=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=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=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/hep-ex?searchtype=author&query=Asai%2C+J">J. Asai</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=Baldisseri%2C+A">A. Baldisseri</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=Barnes%2C+P+D">P. D. Barnes</a>, <a href="/search/hep-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</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="1105.1966v1-abstract-short" style="display: inline;"> We report on charmonium measurements [J/psi(1S), psi'(2S), and chi_c(1P)] in p+p collisions at sqrt(s)=200 GeV. We find that the fraction of J/psi coming from the feed-down decay of psi' and chi_c in the midrapidity region ($|畏|<0.35$) is 9.6+/-2.4% and 32+/-9%, respectively. We also report new, higher statistics p_T and rapidity dependencies of the J/psi yield via dielectron decay in the same mid… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1105.1966v1-abstract-full').style.display = 'inline'; document.getElementById('1105.1966v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1105.1966v1-abstract-full" style="display: none;"> We report on charmonium measurements [J/psi(1S), psi'(2S), and chi_c(1P)] in p+p collisions at sqrt(s)=200 GeV. We find that the fraction of J/psi coming from the feed-down decay of psi' and chi_c in the midrapidity region ($|畏|<0.35$) is 9.6+/-2.4% and 32+/-9%, respectively. We also report new, higher statistics p_T and rapidity dependencies of the J/psi yield via dielectron decay in the same midrapidity range and at forward rapidity (1.2<|eta|<2.4) via dimuon decay. These results are compared with measurements from other experiments and discussed in the context of current charmonium production models. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1105.1966v1-abstract-full').style.display = 'none'; document.getElementById('1105.1966v1-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> 10 May, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2011. </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">447 authors, 25 pages, 23 figures, 11 tables. Submitted to 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> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1102.0753">arXiv:1102.0753</a> <span> [<a href="https://arxiv.org/pdf/1102.0753">pdf</a>, <a href="https://arxiv.org/ps/1102.0753">ps</a>, <a href="https://arxiv.org/format/1102.0753">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.83.064903">10.1103/PhysRevC.83.064903 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Identified charged hadron production in p+p collisions at sqrt(s)=200 and 62.4 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <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=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=Aoki%2C+K">K. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Armendariz%2C+R">R. Armendariz</a>, <a href="/search/hep-ex?searchtype=author&query=Aronson%2C+S+H">S. H. Aronson</a>, <a href="/search/hep-ex?searchtype=author&query=Asai%2C+J">J. Asai</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=Baldisseri%2C+A">A. Baldisseri</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=Barnes%2C+P+D">P. D. Barnes</a>, <a href="/search/hep-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a>, <a href="/search/hep-ex?searchtype=author&query=Basye%2C+A+T">A. T. Basye</a> , et al. (406 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="1102.0753v1-abstract-short" style="display: inline;"> Transverse momentum distributions and yields for $蟺^{\pm}$, $K^{\pm}$, $p$ and $\bar{p}$ in $p+p$ collisions at $\sqrt{s}$=200 and 62.4 GeV at midrapidity are measured by the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC). These data provide important baseline spectra for comparisons with identified particle spectra in heavy ion collisions at RHIC. We present the inverse slope par… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1102.0753v1-abstract-full').style.display = 'inline'; document.getElementById('1102.0753v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1102.0753v1-abstract-full" style="display: none;"> Transverse momentum distributions and yields for $蟺^{\pm}$, $K^{\pm}$, $p$ and $\bar{p}$ in $p+p$ collisions at $\sqrt{s}$=200 and 62.4 GeV at midrapidity are measured by the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC). These data provide important baseline spectra for comparisons with identified particle spectra in heavy ion collisions at RHIC. We present the inverse slope parameter $T_{\rm inv}$, mean transverse momentum $<p_T>$ and yield per unit rapidity $dN/dy$ at each energy, and compare them to other measurements at different $\sqrt{s}$ in $p+p$ and $p+\bar{p}$ collisions. We also present the scaling properties such as $m_T$ scaling, $x_T$ scaling on the $p_T$ spectra between different energies. To discuss the mechanism of the particle production in $p+p$ collisions, the measured spectra are compared to next-to-leading-order or next-to-leading-logarithmic perturbative quantum chromodynamics calculations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1102.0753v1-abstract-full').style.display = 'none'; document.getElementById('1102.0753v1-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, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2011. </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">431 authors from 62 institutions, 32 pages, 23 figures, and 18 tables. Submitted to 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.C83:064903,2011 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1009.6224">arXiv:1009.6224</a> <span> [<a href="https://arxiv.org/pdf/1009.6224">pdf</a>, <a href="https://arxiv.org/ps/1009.6224">ps</a>, <a href="https://arxiv.org/format/1009.6224">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.83.032001">10.1103/PhysRevD.83.032001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Cross section and double helicity asymmetry for eta mesons and their comparison to neutral pion production 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=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=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=Aoki%2C+K">K. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Armendariz%2C+R">R. Armendariz</a>, <a href="/search/hep-ex?searchtype=author&query=Aronson%2C+S+H">S. H. Aronson</a>, <a href="/search/hep-ex?searchtype=author&query=Asai%2C+J">J. Asai</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=Baldisseri%2C+A">A. Baldisseri</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=Barnes%2C+P+D">P. D. Barnes</a>, <a href="/search/hep-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a>, <a href="/search/hep-ex?searchtype=author&query=Basye%2C+A+T">A. T. Basye</a> , et al. (407 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="1009.6224v2-abstract-short" style="display: inline;"> Measurements of double-helicity asymmetries for inclusive hadron production in polarized p+p collisions are sensitive to helicity--dependent parton distribution functions, in particular to the gluon helicity distribution, Delta(g). This study focuses on the extraction of the double-helicity asymmetry in eta production: polarized p+p --> eta + X, the eta cross section, and the eta/pi^0 cross sectio… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1009.6224v2-abstract-full').style.display = 'inline'; document.getElementById('1009.6224v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1009.6224v2-abstract-full" style="display: none;"> Measurements of double-helicity asymmetries for inclusive hadron production in polarized p+p collisions are sensitive to helicity--dependent parton distribution functions, in particular to the gluon helicity distribution, Delta(g). This study focuses on the extraction of the double-helicity asymmetry in eta production: polarized p+p --> eta + X, the eta cross section, and the eta/pi^0 cross section ratio. The cross section and ratio measurements provide essential input for the extraction of fragmentation functions that are needed to access the helicity-dependent parton distribution functions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1009.6224v2-abstract-full').style.display = 'none'; document.getElementById('1009.6224v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 October, 2010; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 September, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2010. </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">432 authors from 62 institutions, 13 pages, 5 figures, and 3 tables. Submitted to Physical Review D. v2 has minor changes only to update references and reposition figures and tables. All data points plotted in Figs. 2, 4, and 5 are given in Tables I, II, and III, respectively</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.D83:032001,2011 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1009.4921">arXiv:1009.4921</a> <span> [<a href="https://arxiv.org/pdf/1009.4921">pdf</a>, <a href="https://arxiv.org/ps/1009.4921">ps</a>, <a href="https://arxiv.org/format/1009.4921">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.84.012006">10.1103/PhysRevD.84.012006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Event Structure and Double Helicity Asymmetry in Jet Production from 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=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=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=Aoki%2C+K">K. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Armendariz%2C+R">R. Armendariz</a>, <a href="/search/hep-ex?searchtype=author&query=Aronson%2C+S+H">S. H. Aronson</a>, <a href="/search/hep-ex?searchtype=author&query=Asai%2C+J">J. Asai</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=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=Baldisseri%2C+A">A. Baldisseri</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=Barnes%2C+P+D">P. D. Barnes</a>, <a href="/search/hep-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a>, <a href="/search/hep-ex?searchtype=author&query=Bathe%2C+S">S. Bathe</a>, <a href="/search/hep-ex?searchtype=author&query=Batsouli%2C+S">S. Batsouli</a> , et al. (351 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="1009.4921v1-abstract-short" style="display: inline;"> We report on event structure and double helicity asymmetry ($A_LL$) of jet production in longitudinally polarized p+p collisions at $\sqrt{s}$=200 GeV. Photons and charged particles were measured at midrapidity $|畏| < 0.35$ with the requirement of a high-momentum ($>2$ GeV/$c$) photon in each event. Measured event structure is compared with {\sc pythia} and {\sc geant} simulations. The shape of je… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1009.4921v1-abstract-full').style.display = 'inline'; document.getElementById('1009.4921v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1009.4921v1-abstract-full" style="display: none;"> We report on event structure and double helicity asymmetry ($A_LL$) of jet production in longitudinally polarized p+p collisions at $\sqrt{s}$=200 GeV. Photons and charged particles were measured at midrapidity $|畏| < 0.35$ with the requirement of a high-momentum ($>2$ GeV/$c$) photon in each event. Measured event structure is compared with {\sc pythia} and {\sc geant} simulations. The shape of jets and the underlying event were well reproduced at this collision energy. For the measurement of jet $A_{LL}$, photons and charged particles were clustered with a seed-cone algorithm to obtain the cluster $p_T$ sum ($p_T^{\rm reco}$). The effect of detector response and the underlying events on $p_T^{\rm reco}$ was evaluated with the simulation. The production rate of reconstructed jets is satisfactorily reproduced with the NLO pQCD jet production cross section. For $4 < p_T^{\rm reco} < 12$ GeV/$c$ with an average beam polarization of $< P > = 49%$ we measured $A_{LL} = -0.0014 \pm 0.0037^{\rm stat}$ at the lowest $p_T^{\rm reco}$ bin (4-5 GeV/$c$) and $-0.0181 \pm 0.0282^{\rm stat}$ at the highest $p_T^{\rm reco}$ bin (10-12 GeV/$c$) with a beam polarization scale error of 9.4% and a $\pT$ scale error of 10%. Jets in the measured $p_T^{\rm reco}$ range arise primarily from hard-scattered gluons with momentum fraction $0.02 < x < 0.3$ according to {\sc pythia}. The measured $A_{LL}$ is compared with predictions that assume various $螖G(x)$ distributions based on the GRSV parameterization. The present result imposes the limit $-1.1 < \int_{0.02}^{0.3}dx 螖G(x, 渭^2 = 1 {\rm GeV}^2) < 0.4$ at 95% confidence level or $\int_{0.02}^{0.3}dx 螖G(x, 渭^2 = 1 {\rm GeV}^2) < 0.5$ at 99% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1009.4921v1-abstract-full').style.display = 'none'; document.getElementById('1009.4921v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 September, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2010. </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">376 authors from 58 institutions, 18 pages, 22 figures, and 5 tables. Submitted to 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.D84:012006,2011 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1009.4864">arXiv:1009.4864</a> <span> [<a href="https://arxiv.org/pdf/1009.4864">pdf</a>, <a href="https://arxiv.org/ps/1009.4864">ps</a>, <a href="https://arxiv.org/format/1009.4864">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.82.112008">10.1103/PhysRevD.82.112008 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of Transverse Single-Spin Asymmetries for J/psi Production 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=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=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=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Aramaki%2C+Y">Y. Aramaki</a>, <a href="/search/hep-ex?searchtype=author&query=Asai%2C+J">J. Asai</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=Baldisseri%2C+A">A. Baldisseri</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=Barnes%2C+P+D">P. D. Barnes</a> , et al. (423 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="1009.4864v1-abstract-short" style="display: inline;"> We report the first measurement of transverse single-spin asymmetries in $J/蠄$ production from transversely polarized $p+p$ collisions at $\sqrt{s} = 200$ GeV with data taken by the PHENIX experiment in 2006 and 2008. The measurement was performed over the rapidity ranges $1.2 < |y| < 2.2$ and $ |y| < 0.35$ for transverse momenta up to 6 GeV/$c$. $J/蠄$ production at RHIC is dominated by processes… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1009.4864v1-abstract-full').style.display = 'inline'; document.getElementById('1009.4864v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1009.4864v1-abstract-full" style="display: none;"> We report the first measurement of transverse single-spin asymmetries in $J/蠄$ production from transversely polarized $p+p$ collisions at $\sqrt{s} = 200$ GeV with data taken by the PHENIX experiment in 2006 and 2008. The measurement was performed over the rapidity ranges $1.2 < |y| < 2.2$ and $ |y| < 0.35$ for transverse momenta up to 6 GeV/$c$. $J/蠄$ production at RHIC is dominated by processes involving initial-state gluons, and transverse single-spin asymmetries of the $J/蠄$ can provide access to gluon dynamics within the nucleon. Such asymmetries may also shed light on the long-standing question in QCD of the $J/蠄$ production mechanism. Asymmetries were obtained as a function of $J/蠄$ transverse momentum and Feynman-$x$, with a value of $-0.086 \pm 0.026^{\rm stat} \pm 0.003^{\rm syst}$ in the forward region. This result suggests possible nonzero trigluon correlation functions in transversely polarized protons and, if well defined in this reaction, a nonzero gluon Sivers distribution function. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1009.4864v1-abstract-full').style.display = 'none'; document.getElementById('1009.4864v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 September, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2010. </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">431 authors from 62 institutions, 13 pages, 5 figures, and 5 tables. Submitted to 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.D82:112008,2010 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1006.1347">arXiv:1006.1347</a> <span> [<a href="https://arxiv.org/pdf/1006.1347">pdf</a>, <a href="https://arxiv.org/ps/1006.1347">ps</a>, <a href="https://arxiv.org/format/1006.1347">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.82.072001">10.1103/PhysRevD.82.072001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> High p_T Direct Photon and pi^0 Triggered Azimuthal Jet Correlations in sqrt(s)=200 GeV p+p Collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <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=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=Aoki%2C+K">K. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Armendariz%2C+R">R. Armendariz</a>, <a href="/search/hep-ex?searchtype=author&query=Aronson%2C+S+H">S. H. Aronson</a>, <a href="/search/hep-ex?searchtype=author&query=Asai%2C+J">J. Asai</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=Baldisseri%2C+A">A. Baldisseri</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=Barnes%2C+P+D">P. D. Barnes</a>, <a href="/search/hep-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a>, <a href="/search/hep-ex?searchtype=author&query=Basye%2C+A+T">A. T. Basye</a> , et al. (406 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="1006.1347v1-abstract-short" style="display: inline;"> Correlations of charged hadrons of 1 < pT < 10 GeV/c with high pT direct photons and pi^ 0 mesons in the range 5 <pT < 15 GeV/c are used to study jet fragmentation in the photon+jet and di-jet channels, respectively. The magnitude of the partonic transverse momentum, kT, is obtained by comparing to a model incorporating a Gaussian kT smearing. The sensitivity of the associated charged hadron spect… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1006.1347v1-abstract-full').style.display = 'inline'; document.getElementById('1006.1347v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1006.1347v1-abstract-full" style="display: none;"> Correlations of charged hadrons of 1 < pT < 10 GeV/c with high pT direct photons and pi^ 0 mesons in the range 5 <pT < 15 GeV/c are used to study jet fragmentation in the photon+jet and di-jet channels, respectively. The magnitude of the partonic transverse momentum, kT, is obtained by comparing to a model incorporating a Gaussian kT smearing. The sensitivity of the associated charged hadron spectra to the underlying fragmentation function is tested and the data are compared to calculations using recent global fit results. The shape of the direct photon-associated hadron spectrum as well as its charge asymmetry are found to be consistent with a sample dominated by quark-gluon Compton scattering. No significant evidence of fragmentation photon correlated production is observed within experimental uncertainties. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1006.1347v1-abstract-full').style.display = 'none'; document.getElementById('1006.1347v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 June, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2010. </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">431 authors, 18 pages, 18 figures, 4 tables, RevTeX-4. Submitted to 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.D82:072001,2010 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1005.3674">arXiv:1005.3674</a> <span> [<a href="https://arxiv.org/pdf/1005.3674">pdf</a>, <a href="https://arxiv.org/ps/1005.3674">ps</a>, <a href="https://arxiv.org/format/1005.3674">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.83.052004">10.1103/PhysRevD.83.052004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of neutral mesons in p+p collisions at sqrt(s) = 200 GeV and scaling properties of hadron production </p> <p class="authors"> <span class="search-hit">Authors:</span> <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=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=Aoki%2C+K">K. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Armendariz%2C+R">R. Armendariz</a>, <a href="/search/hep-ex?searchtype=author&query=Aronson%2C+S+H">S. H. Aronson</a>, <a href="/search/hep-ex?searchtype=author&query=Asai%2C+J">J. Asai</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=Baldisseri%2C+A">A. Baldisseri</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=Barnes%2C+P+D">P. D. Barnes</a>, <a href="/search/hep-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a>, <a href="/search/hep-ex?searchtype=author&query=Basye%2C+A+T">A. T. Basye</a> , et al. (406 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="1005.3674v1-abstract-short" style="display: inline;"> The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the invariant differential cross section for production of K^0_S , 蠅, 畏prime, and 蠁mesons in p + p collisions at = 200 GeV. Measurements 蠅and 蠁production in different decay channels give consistent results. New results for the 蠁are in agreement with previously published data and extend the measured pT coverage. The spectral… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1005.3674v1-abstract-full').style.display = 'inline'; document.getElementById('1005.3674v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1005.3674v1-abstract-full" style="display: none;"> The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the invariant differential cross section for production of K^0_S , 蠅, 畏prime, and 蠁mesons in p + p collisions at = 200 GeV. Measurements 蠅and 蠁production in different decay channels give consistent results. New results for the 蠁are in agreement with previously published data and extend the measured pT coverage. The spectral shapes of all hadron transverse momentum distributions measured by PHENIX are well described by a Tsallis distribution functional form with only two parameters, n and T, determining the high-pT and characterizing the low-pT regions of the spectra, respectively. The values of these parameters are very similar for all analyzed meson spectra, but with a lower parameter T extracted for protons. The integrated invariant cross sections calculated from the fitted distributions are found to be consistent with existing measurements and with statistical model predictions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1005.3674v1-abstract-full').style.display = 'none'; document.getElementById('1005.3674v1-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 May, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2010. </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">431 authors, 28 pages text, 18 figures, 11 tables. Submitted to 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.D83:052004,2011 </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" 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