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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/2502.03017">arXiv:2502.03017</a> <span> [<a href="https://arxiv.org/pdf/2502.03017">pdf</a>, <a href="https://arxiv.org/format/2502.03017">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for Double Beta Decay of $^{136}$Xe to the $0^+_1$ Excited State of $^{136}$Ba with PandaX-4T </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=PandaX+Collaboration"> PandaX Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Luo%2C+L">Lingyin Luo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bo%2C+Z">Zihao Bo</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+W">Wei Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+X">Xun Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y">Yunhua Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+Z">Zhaokan Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Cui%2C+X">Xiangyi Cui</a>, <a href="/search/nucl-ex?searchtype=author&query=Fang%2C+Y">Yingji Fang</a>, <a href="/search/nucl-ex?searchtype=author&query=Fang%2C+D">Deqing Fang</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+Z">Zhixing Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Geng%2C+L">Lisheng Geng</a>, <a href="/search/nucl-ex?searchtype=author&query=Giboni%2C+K">Karl Giboni</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+X">Xunan Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+X">Xuyuan Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+Z">Zichao Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Han%2C+C">Chencheng Han</a>, <a href="/search/nucl-ex?searchtype=author&query=Han%2C+K">Ke Han</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+C">Changda He</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+J">Jinrong He</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+D">Di Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+H">Houqi Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+J">Junting Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Hou%2C+R">Ruquan Hou</a>, <a href="/search/nucl-ex?searchtype=author&query=Hou%2C+Y">Yu Hou</a> , et al. (76 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="2502.03017v2-abstract-short" style="display: inline;"> We perform a search of double beta decay of $^{136}$Xe to the excited state, $0^+_1$, of $^{136}$Ba (2$谓尾尾$-0$_1^+$), using the dual-phase xenon detector of PandaX-4T with the first 94.9-day commissioning data. The multi-site events are reconstructed up to the MeV energy scale, which helps to improve the background model significantly. The background contribution from the stainless steel platform… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.03017v2-abstract-full').style.display = 'inline'; document.getElementById('2502.03017v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.03017v2-abstract-full" style="display: none;"> We perform a search of double beta decay of $^{136}$Xe to the excited state, $0^+_1$, of $^{136}$Ba (2$谓尾尾$-0$_1^+$), using the dual-phase xenon detector of PandaX-4T with the first 94.9-day commissioning data. The multi-site events are reconstructed up to the MeV energy scale, which helps to improve the background model significantly. The background contribution from the stainless steel platform outside PandaX-4T cryostat is evaluated for the first time. No significant evidence for 2$谓尾尾$-0$_1^+$ is observed, resulting in a lower limit of $T_{1/2}^{2 谓尾尾-0_1^+} > 7.5 \times 10^{22}$ yr at the 90% confidence level. This is the first experimental limit on such a rare decay in a natural xenon-based detector. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.03017v2-abstract-full').style.display = 'none'; document.getElementById('2502.03017v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.13979">arXiv:2412.13979</a> <span> [<a href="https://arxiv.org/pdf/2412.13979">pdf</a>, <a href="https://arxiv.org/format/2412.13979">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Searching for Neutrinoless Double-Beta Decay of $^{136}$Xe with PandaX-4T </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=PandaX+Collaboration"> PandaX Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhang%2C+S">Shu Zhang</a>, <a href="/search/nucl-ex?searchtype=author&query=Bo%2C+Z">Zihao Bo</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+W">Wei Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+X">Xun Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y">Yunhua Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+Z">Zhaokan Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Cui%2C+X">Xiangyi Cui</a>, <a href="/search/nucl-ex?searchtype=author&query=Fan%2C+Y">Yingjie Fan</a>, <a href="/search/nucl-ex?searchtype=author&query=Fang%2C+D">Deqing Fang</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+Z">Zhixing Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Geng%2C+L">Lisheng Geng</a>, <a href="/search/nucl-ex?searchtype=author&query=Giboni%2C+K">Karl Giboni</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+X">Xunan Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+X">Xuyuan Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+Z">Zichao Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Han%2C+C">Chencheng Han</a>, <a href="/search/nucl-ex?searchtype=author&query=Han%2C+K">Ke Han</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+C">Changda He</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+J">Jinrong He</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+D">Di Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+H">Houqi Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+J">Junting Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Hou%2C+R">Ruquan Hou</a>, <a href="/search/nucl-ex?searchtype=author&query=Hou%2C+Y">Yu Hou</a> , et al. (77 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="2412.13979v1-abstract-short" style="display: inline;"> We report the search for neutrinoless double-beta decay of $^{136}$Xe from the PandaX-4T experiment with a 3.7-tonne natural xenon target. The data reconstruction and the background modeling are optimized in the MeV energy region. A blind analysis is performed with data from the commissioning run and the first science run. No significant excess of signal over the background is observed. A lower li… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.13979v1-abstract-full').style.display = 'inline'; document.getElementById('2412.13979v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.13979v1-abstract-full" style="display: none;"> We report the search for neutrinoless double-beta decay of $^{136}$Xe from the PandaX-4T experiment with a 3.7-tonne natural xenon target. The data reconstruction and the background modeling are optimized in the MeV energy region. A blind analysis is performed with data from the commissioning run and the first science run. No significant excess of signal over the background is observed. A lower limit on the half-life of $^{136}$Xe neutrinoless double-beta decay is established to be $2.1 \times 10^{24}$~yr at the 90\% confidence level, with a $^{136}$Xe exposure of 44.6~kg$\cdot$year. Our result represents the most stringent constraint from a natural xenon detector to date. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.13979v1-abstract-full').style.display = 'none'; document.getElementById('2412.13979v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, 4 figures, 2 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.14355">arXiv:2411.14355</a> <span> [<a href="https://arxiv.org/pdf/2411.14355">pdf</a>, <a href="https://arxiv.org/format/2411.14355">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of two-neutrino double electron capture half-life of $^{124}$Xe with PandaX-4T </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=PandaX+Collaboration"> PandaX Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Bo%2C+Z">Zihao Bo</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+W">Wei Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+X">Xun Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y">Yunhua Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+Z">Zhaokan Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Cui%2C+X">Xiangyi Cui</a>, <a href="/search/nucl-ex?searchtype=author&query=Fan%2C+Y">Yingjie Fan</a>, <a href="/search/nucl-ex?searchtype=author&query=Fang%2C+D">Deqing Fang</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+Z">Zhixing Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Geng%2C+L">Lisheng Geng</a>, <a href="/search/nucl-ex?searchtype=author&query=Giboni%2C+K">Karl Giboni</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+X">Xunan Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+X">Xuyuan Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+Z">Zichao Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Han%2C+C">Chencheng Han</a>, <a href="/search/nucl-ex?searchtype=author&query=Han%2C+K">Ke Han</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+C">Changda He</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+J">Jinrong He</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+D">Di Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+H">Houqi Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+J">Junting Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Hou%2C+R">Ruquan Hou</a>, <a href="/search/nucl-ex?searchtype=author&query=Hou%2C+Y">Yu Hou</a>, <a href="/search/nucl-ex?searchtype=author&query=Ji%2C+X">Xiangdong Ji</a> , et al. (77 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2411.14355v2-abstract-short" style="display: inline;"> Detailed studies of two-neutrino double electron capture (2$谓$DEC) is a crucial step towards searching for the neutrino-less mode to explore the Majorana nature of neutrinos. We have measured precisely the half-life of the 2$谓$DEC process in $^{124}$Xe, utilizing a total exposure of 1.73 tonne$\cdot$year from the commissioning run and the first science run of the PandaX-4T experiment. A time-depen… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.14355v2-abstract-full').style.display = 'inline'; document.getElementById('2411.14355v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.14355v2-abstract-full" style="display: none;"> Detailed studies of two-neutrino double electron capture (2$谓$DEC) is a crucial step towards searching for the neutrino-less mode to explore the Majorana nature of neutrinos. We have measured precisely the half-life of the 2$谓$DEC process in $^{124}$Xe, utilizing a total exposure of 1.73 tonne$\cdot$year from the commissioning run and the first science run of the PandaX-4T experiment. A time-dependent background model in the $\mathcal{O}$(10 keV) energy is constructed for the first time in PandaX-4T data. With an unbinned maximum likelihood fit, we determine the half-life of the 2$谓$DEC process to be $(1.03\pm0.15_{\rm stat}\pm0.08_{\rm sys})\times 10^{22}$$\,$yr. Furthermore, we have evaluated the branching ratio for both electrons captured from the $K$ shell ($KK$) to be $(65\pm5)\%$, which aligns with the $^{124}$Xe nuclear model calculations within 1.5$\,$$蟽$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.14355v2-abstract-full').style.display = 'none'; document.getElementById('2411.14355v2-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 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">19 pages, 5 figures, 4 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.10892">arXiv:2407.10892</a> <span> [<a href="https://arxiv.org/pdf/2407.10892">pdf</a>, <a href="https://arxiv.org/format/2407.10892">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="Solar and Stellar Astrophysics">astro-ph.SR</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"> First Indication of Solar $^8$B Neutrino Flux through Coherent Elastic Neutrino-Nucleus Scattering in PandaX-4T </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=PandaX+Collaboration"> PandaX Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Bo%2C+Z">Zihao Bo</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+W">Wei Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+X">Xun Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y">Yunhua Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+Z">Zhaokan Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Cui%2C+X">Xiangyi Cui</a>, <a href="/search/nucl-ex?searchtype=author&query=Fan%2C+Y">Yingjie Fan</a>, <a href="/search/nucl-ex?searchtype=author&query=Fang%2C+D">Deqing Fang</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+Z">Zhixing Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Geng%2C+L">Lisheng Geng</a>, <a href="/search/nucl-ex?searchtype=author&query=Giboni%2C+K">Karl Giboni</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+X">Xunan Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+X">Xuyuan Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+Z">Zichao Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Han%2C+C">Chencheng Han</a>, <a href="/search/nucl-ex?searchtype=author&query=Han%2C+K">Ke Han</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+C">Changda He</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+J">Jinrong He</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+D">Di Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+H">Houqi Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+J">Junting Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Hou%2C+R">Ruquan Hou</a>, <a href="/search/nucl-ex?searchtype=author&query=Hou%2C+Y">Yu Hou</a>, <a href="/search/nucl-ex?searchtype=author&query=Ji%2C+X">Xiangdong Ji</a> , et al. (77 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2407.10892v3-abstract-short" style="display: inline;"> The PandaX-4T liquid xenon detector at the China Jinping Underground Laboratory is used to measure the solar $^8$B neutrino flux by detecting neutrinos through coherent scattering with xenon nuclei. Data samples requiring the coincidence of scintillation and ionization signals (paired), as well as unpaired ionization-only signals (US2), are selected with energy threshold of approximately 1.1 keV (… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.10892v3-abstract-full').style.display = 'inline'; document.getElementById('2407.10892v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.10892v3-abstract-full" style="display: none;"> The PandaX-4T liquid xenon detector at the China Jinping Underground Laboratory is used to measure the solar $^8$B neutrino flux by detecting neutrinos through coherent scattering with xenon nuclei. Data samples requiring the coincidence of scintillation and ionization signals (paired), as well as unpaired ionization-only signals (US2), are selected with energy threshold of approximately 1.1 keV (0.33 keV) nuclear recoil energy. Combining the commissioning run and the first science run of PandaX-4T, a total exposure of 1.20 and 1.04 tonne$\cdot$year are collected for the paired and US2, respectively. After unblinding, 3 and 332 events are observed with an expectation of 2.8$\pm$0.5 and 251$\pm$32 background events, for the paired and US2 data, respectively. A combined analysis yields a best-fit $^8$B neutrino signal of 3.5 (75) events from the paired (US2) data sample, with $\sim$37\% uncertainty, and the background-only hypothesis is disfavored at 2.64$蟽$ significance. This gives a solar $^8$B neutrino flux of ($8.4\pm3.1$)$\times$10$^6$ cm$^{-2}$s$^{-1}$, consistent with the standard solar model prediction. It is also the first indication of solar $^8$B neutrino ``fog'' in a dark matter direct detection experiment. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.10892v3-abstract-full').style.display = 'none'; document.getElementById('2407.10892v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Accepted by Physical Review Letters</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2312.15632">arXiv:2312.15632</a> <span> [<a href="https://arxiv.org/pdf/2312.15632">pdf</a>, <a href="https://arxiv.org/format/2312.15632">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.132.152502">10.1103/PhysRevLett.132.152502 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Searching for Two-Neutrino and Neutrinoless Double Beta Decay of $^{134}$Xe with the PandaX-4T Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=PandaX+Collaboration"> PandaX Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Yan%2C+X">Xiyu Yan</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+Z">Zhaokan Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdukerim%2C+A">Abdusalam Abdukerim</a>, <a href="/search/nucl-ex?searchtype=author&query=Bo%2C+Z">Zihao Bo</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+W">Wei Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+X">Xun Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+C">Chen Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Cui%2C+X">Xiangyi Cui</a>, <a href="/search/nucl-ex?searchtype=author&query=Fan%2C+Y">Yingjie Fan</a>, <a href="/search/nucl-ex?searchtype=author&query=Fang%2C+D">Deqing Fang</a>, <a href="/search/nucl-ex?searchtype=author&query=Fu%2C+C">Changbo Fu</a>, <a href="/search/nucl-ex?searchtype=author&query=Fu%2C+M">Mengting Fu</a>, <a href="/search/nucl-ex?searchtype=author&query=Geng%2C+L">Lisheng Geng</a>, <a href="/search/nucl-ex?searchtype=author&query=Giboni%2C+K">Karl Giboni</a>, <a href="/search/nucl-ex?searchtype=author&query=Gu%2C+L">Linhui Gu</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+X">Xuyuan Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Han%2C+C">Chencheng Han</a>, <a href="/search/nucl-ex?searchtype=author&query=Han%2C+K">Ke Han</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+C">Changda He</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+J">Jinrong He</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+D">Di Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+Y">Yanlin Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+J">Junting Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+Z">Zhou Huang</a> , et al. (72 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2312.15632v2-abstract-short" style="display: inline;"> $^{134}$Xe is a candidate isotope for neutrinoless double beta decay~($0谓尾尾$) search. In addition, the two-neutrino case ($2谓尾尾$) allowed by the Standard Model of particle physics has not yet been observed. Utilizing the 10.4% of $^{134}$Xe in the natural xenon in the PandaX-4T detector and its first 94.9-day exposure, we have established the most stringent constraints on $2谓尾尾$ and $0谓尾尾$ of $^{1… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.15632v2-abstract-full').style.display = 'inline'; document.getElementById('2312.15632v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2312.15632v2-abstract-full" style="display: none;"> $^{134}$Xe is a candidate isotope for neutrinoless double beta decay~($0谓尾尾$) search. In addition, the two-neutrino case ($2谓尾尾$) allowed by the Standard Model of particle physics has not yet been observed. Utilizing the 10.4% of $^{134}$Xe in the natural xenon in the PandaX-4T detector and its first 94.9-day exposure, we have established the most stringent constraints on $2谓尾尾$ and $0谓尾尾$ of $^{134}$Xe half-lives, with limits of $2.8\times10^{22}$ yr and $3.0\times10^{23}$ yr at 90% confidence level, respectively. The $2谓尾尾$ ($0谓尾尾$) limit surpasses the previously reported best result by a factor of 32 (2.7), highlighting the potential of large monolithic natural xenon detectors. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.15632v2-abstract-full').style.display = 'none'; document.getElementById('2312.15632v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.Lett. 132 (2024) 15, 152502 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2205.12809">arXiv:2205.12809</a> <span> [<a href="https://arxiv.org/pdf/2205.12809">pdf</a>, <a href="https://arxiv.org/format/2205.12809">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/10.34133/2022/9798721">10.34133/2022/9798721 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of Double Beta Decay Half-life of $^{136}$Xe with the PandaX-4T Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=PandaX+Collaboration"> PandaX Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Si%2C+L">Lin Si</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+Z">Zhaokan Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdukerim%2C+A">Abdusalam Abdukerim</a>, <a href="/search/nucl-ex?searchtype=author&query=Bo%2C+Z">Zihao Bo</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+W">Wei Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+X">Xun Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y">Yunhua Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+C">Chen Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+Y">Yunshan Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Cui%2C+X">Xiangyi Cui</a>, <a href="/search/nucl-ex?searchtype=author&query=Fan%2C+Y">Yingjie Fan</a>, <a href="/search/nucl-ex?searchtype=author&query=Fang%2C+D">Deqing Fang</a>, <a href="/search/nucl-ex?searchtype=author&query=Fu%2C+C">Changbo Fu</a>, <a href="/search/nucl-ex?searchtype=author&query=Fu%2C+M">Mengting Fu</a>, <a href="/search/nucl-ex?searchtype=author&query=Geng%2C+L">Lisheng Geng</a>, <a href="/search/nucl-ex?searchtype=author&query=Giboni%2C+K">Karl Giboni</a>, <a href="/search/nucl-ex?searchtype=author&query=Gu%2C+L">Linhui Gu</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+X">Xuyuan Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Han%2C+K">Ke Han</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+C">Changda He</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+J">Jinrong He</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+D">Di Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+Y">Yanlin Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+Z">Zhou Huang</a> , et al. (63 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="2205.12809v2-abstract-short" style="display: inline;"> Precise measurement of two-neutrino double beta decay (DBD) half-life is an important step for the searches of Majorana neutrinos with neutrinoless double beta decay. We report the measurement of DBD half-life of $^{136}$Xe using the PandaX-4T dual-phase Time Projection Chamber (TPC) with 3.7-tonne natural xenon and the first 94.9-day physics data release. The background model in the fiducial volu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.12809v2-abstract-full').style.display = 'inline'; document.getElementById('2205.12809v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2205.12809v2-abstract-full" style="display: none;"> Precise measurement of two-neutrino double beta decay (DBD) half-life is an important step for the searches of Majorana neutrinos with neutrinoless double beta decay. We report the measurement of DBD half-life of $^{136}$Xe using the PandaX-4T dual-phase Time Projection Chamber (TPC) with 3.7-tonne natural xenon and the first 94.9-day physics data release. The background model in the fiducial volume is well constrained in situ by events in the outer active region. With a $^{136}$Xe exposure of 15.5 kg-year, we establish the half-life as $2.27 \pm 0.03 (stat.)\pm 0.10 (syst.)\times 10^{21}$ years. This is the first DBD half-life measurement with natural xenon and demonstrates the physics capability of a large-scale liquid xenon TPC in the field of rare event searches. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.12809v2-abstract-full').style.display = 'none'; document.getElementById('2205.12809v2-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 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 May, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Research, vol. 2022, Article ID 9798721, 2022 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.07855">arXiv:2011.07855</a> <span> [<a href="https://arxiv.org/pdf/2011.07855">pdf</a>, <a href="https://arxiv.org/ps/2011.07855">ps</a>, <a href="https://arxiv.org/format/2011.07855">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="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.126.102001">10.1103/PhysRevLett.126.102001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of a near-threshold structure in the $K^+$ recoil-mass spectra in $e^+e^-\to K^+ (D_s^- D^{*0} + D^{*-}_s D^0)$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/nucl-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/nucl-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahmed%2C+S">S. Ahmed</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+M">M. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/nucl-ex?searchtype=author&query=Anita"> Anita</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+X+H">X. H. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/nucl-ex?searchtype=author&query=Ferroli%2C+R+B">R. Baldini Ferroli</a>, <a href="/search/nucl-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/nucl-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/nucl-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/nucl-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/nucl-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/nucl-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Biernat%2C+J">J Biernat</a>, <a href="/search/nucl-ex?searchtype=author&query=Bloms%2C+J">J. Bloms</a>, <a href="/search/nucl-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/nucl-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a> , et al. (481 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2011.07855v2-abstract-short" style="display: inline;"> We report a study of the processes of $e^+e^-\to K^+ (D_s^- D^{*0} + D^{*-}_s D^0)$ based on $e^+e^-$ annihilation samples collected with the BESIII detector operating at BEPCII at five center-of-mass energies ranging from 4.628 to 4.698 GeV with a total integrated luminosity of 3.7 fb$^{-1}$. An excess over the known contributions of the conventional charmed mesons is observed near the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.07855v2-abstract-full').style.display = 'inline'; document.getElementById('2011.07855v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.07855v2-abstract-full" style="display: none;"> We report a study of the processes of $e^+e^-\to K^+ (D_s^- D^{*0} + D^{*-}_s D^0)$ based on $e^+e^-$ annihilation samples collected with the BESIII detector operating at BEPCII at five center-of-mass energies ranging from 4.628 to 4.698 GeV with a total integrated luminosity of 3.7 fb$^{-1}$. An excess over the known contributions of the conventional charmed mesons is observed near the $D_s^- D^{*0}$ and $D^{*-}_s D^0$ mass thresholds in the $K^{+}$ recoil-mass spectrum for events collected at $\sqrt{s}=4.681$ GeV. The structure matches a mass-dependent-width Breit-Wigner line shape, whose pole mass and width are determined as $(3982.5^{+1.8}_{-2.6}\pm2.1)$ MeV/$c^2$ and $(12.8^{+5.3}_{-4.4}\pm3.0)$ MeV, respectively. The first uncertainties are statistical and the second are systematic. The significance of the resonance hypothesis is estimated to be 5.3 $蟽$ over the contributions only from the conventional charmed mesons. This is the first candidate of the charged hidden-charm tetraquark with strangeness, decaying into $D_s^- D^{*0}$ and $D^{*-}_s D^0$. However, the properties of the excess need further exploration with more statistics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.07855v2-abstract-full').style.display = 'none'; document.getElementById('2011.07855v2-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 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">17 pages; Version published in Phys. Rev. Lett</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 126, 102001 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2006.09311">arXiv:2006.09311</a> <span> [<a href="https://arxiv.org/pdf/2006.09311">pdf</a>, <a href="https://arxiv.org/format/2006.09311">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div 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/10.1088/1748-0221/15/12/P12038">10.1088/1748-0221/15/12/P12038 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Internal Calibration of the PandaX-II Detector with Radon Gaseous Sources </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Ma%2C+W">Wenbo Ma</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdukerim%2C+A">Abdusalam Abdukerim</a>, <a href="/search/nucl-ex?searchtype=author&query=Bo%2C+Z">Zihao Bo</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+W">Wei Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+X">Xun Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y">Yunhua Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+C">Chen Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Cui%2C+X">Xiangyi Cui</a>, <a href="/search/nucl-ex?searchtype=author&query=Fan%2C+Y">Yingjie Fan</a>, <a href="/search/nucl-ex?searchtype=author&query=Fang%2C+D">Deqing Fang</a>, <a href="/search/nucl-ex?searchtype=author&query=Fu%2C+C">Changbo Fu</a>, <a href="/search/nucl-ex?searchtype=author&query=Fu%2C+M">Mengting Fu</a>, <a href="/search/nucl-ex?searchtype=author&query=Geng%2C+L">Lisheng Geng</a>, <a href="/search/nucl-ex?searchtype=author&query=Giboni%2C+K">Karl Giboni</a>, <a href="/search/nucl-ex?searchtype=author&query=Gu%2C+L">Linhui Gu</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+X">Xuyuan Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Han%2C+K">Ke Han</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+C">Changda He</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+S">Shengming He</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+D">Di Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+Y">Yan Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+Y">Yanlin Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+Z">Zhou Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Ji%2C+X">Xiangdong Ji</a>, <a href="/search/nucl-ex?searchtype=author&query=Ju%2C+Y">Yonglin Ju</a> , et al. (43 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="2006.09311v3-abstract-short" style="display: inline;"> We have developed a low-energy electron recoil (ER) calibration method with $^{220}$Rn for the PandaX-II detector. $^{220}$Rn, emanated from natural thorium compounds, was fed into the detector through the xenon purification system. From 2017 to 2019, we performed three dedicated calibration campaigns with different radon sources. We studied the detector response to $伪$, $尾$, and $纬$ particles wit… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.09311v3-abstract-full').style.display = 'inline'; document.getElementById('2006.09311v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2006.09311v3-abstract-full" style="display: none;"> We have developed a low-energy electron recoil (ER) calibration method with $^{220}$Rn for the PandaX-II detector. $^{220}$Rn, emanated from natural thorium compounds, was fed into the detector through the xenon purification system. From 2017 to 2019, we performed three dedicated calibration campaigns with different radon sources. We studied the detector response to $伪$, $尾$, and $纬$ particles with focus on low energy ER events. During the runs in 2017 and 2018, the amount of radioactivity of $^{222}$Rn were on the order of 1\% of that of $^{220}$Rn and thorium particulate contamination was negligible, especially in 2018. We also measured the background contribution from $^{214}$Pb for the first time in PandaX-II with the help from a $^{222}$Rn injection. Calibration strategy with $^{220}$Rn and $^{222}$Rn will be implemented in the upcoming PandaX-4T experiment and can be useful for other xenon-based detectors as well. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.09311v3-abstract-full').style.display = 'none'; document.getElementById('2006.09311v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 January, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 June, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 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">14 pages, 8 figures. published in JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 15 P12038 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1907.10796">arXiv:1907.10796</a> <span> [<a href="https://arxiv.org/pdf/1907.10796">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> </div> <p class="title is-5 mathjax"> A Novel Energy Resolved X-Ray Semiconductor Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Yan%2C+T">Tengfei Yan</a>, <a href="/search/nucl-ex?searchtype=author&query=Yang%2C+C">Chunlei Yang</a>, <a href="/search/nucl-ex?searchtype=author&query=Cui%2C+X">Xiaodong Cui</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1907.10796v1-abstract-short" style="display: inline;"> The hyperspectral X-ray imaging has been long sought in various fields from material analysis to medical diagnosis. Here we propose a new semiconductor detector structure to realize energy-resolved imaging at potentially low cost. The working principle is based on the strong energy-dependent absorption of X-ray in solids. Namely, depending on the energy, X-ray photons experience dramatically diffe… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1907.10796v1-abstract-full').style.display = 'inline'; document.getElementById('1907.10796v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1907.10796v1-abstract-full" style="display: none;"> The hyperspectral X-ray imaging has been long sought in various fields from material analysis to medical diagnosis. Here we propose a new semiconductor detector structure to realize energy-resolved imaging at potentially low cost. The working principle is based on the strong energy-dependent absorption of X-ray in solids. Namely, depending on the energy, X-ray photons experience dramatically different attenuation. An array or matrix of semiconductor cells is to map the X-ray intensity along its trajectory. The X-ray spectrum could be extracted from a Laplace like transform or even a supervised machine learning. We demonstrated an energy-resolved X-ray detection with a regular silicon camera. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1907.10796v1-abstract-full').style.display = 'none'; document.getElementById('1907.10796v1-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 July, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2019. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1907.00545">arXiv:1907.00545</a> <span> [<a href="https://arxiv.org/pdf/1907.00545">pdf</a>, <a href="https://arxiv.org/format/1907.00545">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/s11433-019-9603-9">10.1007/s11433-019-9603-9 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> An Improved Evaluation of the Neutron Background in the PandaX-II Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+Q">Qiuhong Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdukerim%2C+A">Abdusalam Abdukerim</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+W">Wei Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+X">Xun Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y">Yunhua Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Cui%2C+X">Xiangyi Cui</a>, <a href="/search/nucl-ex?searchtype=author&query=Fan%2C+Y">Yingjie Fan</a>, <a href="/search/nucl-ex?searchtype=author&query=Fang%2C+D">Deqing Fang</a>, <a href="/search/nucl-ex?searchtype=author&query=Fu%2C+C">Changbo Fu</a>, <a href="/search/nucl-ex?searchtype=author&query=Geng%2C+L">Lisheng Geng</a>, <a href="/search/nucl-ex?searchtype=author&query=Giboni%2C+K">Karl Giboni</a>, <a href="/search/nucl-ex?searchtype=author&query=Giuliani%2C+F">Franco Giuliani</a>, <a href="/search/nucl-ex?searchtype=author&query=Gu%2C+L">Linhui Gu</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+X">Xuyuan Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Han%2C+K">Ke Han</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+C">Changda He</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+D">Di Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+Y">Yan Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+Y">Yanlin Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+Z">Zhou Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Ji%2C+P">Peng Ji</a>, <a href="/search/nucl-ex?searchtype=author&query=Ji%2C+X">Xiangdong Ji</a>, <a href="/search/nucl-ex?searchtype=author&query=Ju%2C+Y">Yonglin Ju</a>, <a href="/search/nucl-ex?searchtype=author&query=Lai%2C+Y">Yihui Lai</a>, <a href="/search/nucl-ex?searchtype=author&query=Liang%2C+K">Kun Liang</a> , et al. (38 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="1907.00545v2-abstract-short" style="display: inline;"> In dark matter direct detection experiments, neutron is a serious source of background, which can mimic the dark matter-nucleus scattering signals. In this paper, we present an improved evaluation of the neutron background in the PandaX-II dark matter experiment by a novel approach. Instead of fully relying on the Monte Carlo simulation, the overall neutron background is determined from the neutro… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1907.00545v2-abstract-full').style.display = 'inline'; document.getElementById('1907.00545v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1907.00545v2-abstract-full" style="display: none;"> In dark matter direct detection experiments, neutron is a serious source of background, which can mimic the dark matter-nucleus scattering signals. In this paper, we present an improved evaluation of the neutron background in the PandaX-II dark matter experiment by a novel approach. Instead of fully relying on the Monte Carlo simulation, the overall neutron background is determined from the neutron-induced high energy signals in the data. In addition, the probability of producing a dark-matter-like background per neutron is evaluated with a complete Monte Carlo generator, where the correlated emission of neutron(s) and $纬$(s) in the ($伪$, n) reactions and spontaneous fissions is taken into consideration. With this method, the neutron backgrounds in the Run 9 (26-ton-day) and Run 10 (28-ton-day) data sets of PandaX-II are estimated to be 0.66$\pm$0.24 and 0.47$\pm$0.25 events, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1907.00545v2-abstract-full').style.display = 'none'; document.getElementById('1907.00545v2-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 July, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 July, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, 9 figures, 7 tables; version2 accepted by Sci. China Phys. Mech. Astron</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Sci.China Phys.Mech.Astron. 63 (2020) 3, 231011 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1906.11457">arXiv:1906.11457</a> <span> [<a href="https://arxiv.org/pdf/1906.11457">pdf</a>, <a href="https://arxiv.org/format/1906.11457">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</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/10.1088/1674-1137/43/11/113001">10.1088/1674-1137/43/11/113001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Searching for Neutrino-less Double Beta Decay of $^{136}$Xe with PandaX-II Liquid Xenon Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Ni%2C+K">Kaixiang Ni</a>, <a href="/search/nucl-ex?searchtype=author&query=Lai%2C+Y">Yihui Lai</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdukerim%2C+A">Abdusalam Abdukerim</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+W">Wei Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+X">Xun Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y">Yunhua Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Cui%2C+X">Xiangyi Cui</a>, <a href="/search/nucl-ex?searchtype=author&query=Fan%2C+Y">Yingjie Fan</a>, <a href="/search/nucl-ex?searchtype=author&query=Fang%2C+D">Deqing Fang</a>, <a href="/search/nucl-ex?searchtype=author&query=Fu%2C+C">Changbo Fu</a>, <a href="/search/nucl-ex?searchtype=author&query=Geng%2C+L">Lisheng Geng</a>, <a href="/search/nucl-ex?searchtype=author&query=Giboni%2C+K">Karl Giboni</a>, <a href="/search/nucl-ex?searchtype=author&query=Giuliani%2C+F">Franco Giuliani</a>, <a href="/search/nucl-ex?searchtype=author&query=Gu%2C+L">Linhui Gu</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+X">Xuyuan Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Han%2C+K">Ke Han</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+C">Changda He</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+D">Di Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+Y">Yan Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+Y">Yanlin Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+Z">Zhou Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Ji%2C+P">Peng Ji</a>, <a href="/search/nucl-ex?searchtype=author&query=Ji%2C+X">Xiangdong Ji</a>, <a href="/search/nucl-ex?searchtype=author&query=Ju%2C+Y">Yonglin Ju</a>, <a href="/search/nucl-ex?searchtype=author&query=Liang%2C+K">Kun Liang</a> , et al. (38 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="1906.11457v1-abstract-short" style="display: inline;"> We report the Neutrino-less Double Beta Decay (NLDBD) search results from PandaX-II dual-phase liquid xenon time projection chamber. The total live time used in this analysis is 403.1 days from June 2016 to August 2018. With NLDBD-optimized event selection criteria, we obtain a fiducial mass of 219 kg of natural xenon. The accumulated xenon exposure is 242 kg$\cdot$yr, or equivalently 22.2 kg… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1906.11457v1-abstract-full').style.display = 'inline'; document.getElementById('1906.11457v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1906.11457v1-abstract-full" style="display: none;"> We report the Neutrino-less Double Beta Decay (NLDBD) search results from PandaX-II dual-phase liquid xenon time projection chamber. The total live time used in this analysis is 403.1 days from June 2016 to August 2018. With NLDBD-optimized event selection criteria, we obtain a fiducial mass of 219 kg of natural xenon. The accumulated xenon exposure is 242 kg$\cdot$yr, or equivalently 22.2 kg$\cdot$yr of $^{136}$Xe exposure. At the region around $^{136}$Xe decay Q-value of 2458 keV, the energy resolution of PandaX-II is 4.2%. We find no evidence of NLDBD in PandaX-II and establish a lower limit for decay half-life of 2.4 $ \times 10^{23} $ yr at the 90% confidence level, which corresponds to an effective Majorana neutrino mass $m_{尾尾} < (1.3 - 3.5)$ eV. This is the first NLDBD result reported from a dual-phase xenon experiment. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1906.11457v1-abstract-full').style.display = 'none'; document.getElementById('1906.11457v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 June, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to Chinese Physics C</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1409.2043">arXiv:1409.2043</a> <span> [<a href="https://arxiv.org/pdf/1409.2043">pdf</a>, <a href="https://arxiv.org/ps/1409.2043">ps</a>, <a href="https://arxiv.org/format/1409.2043">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2015.04.033">10.1016/j.physletb.2015.04.033 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Isolation of Flow and Nonflow Correlations by Two- and Four-Particle Cumulant Measurements of Azimuthal Harmonics in $\sqrt{s_{_{\rm NN}}} =$ 200 GeV Au+Au Collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Abdelwahab%2C+N+M">N. M. Abdelwahab</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai%2C+P">P. Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordyuzhin%2C+I+G">I. G. Bordyuzhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Borowski%2C+W">W. Borowski</a>, <a href="/search/nucl-ex?searchtype=author&query=Bouchet%2C+J">J. Bouchet</a> , et al. (325 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1409.2043v1-abstract-short" style="display: inline;"> A data-driven method was applied to measurements of Au+Au collisions at $\sqrt{s_{_{\rm NN}}} =$ 200 GeV made with the STAR detector at RHIC to isolate pseudorapidity distance $螖畏$-dependent and $螖畏$-independent correlations by using two- and four-particle azimuthal cumulant measurements. We identified a component of the correlation that is $螖畏$-independent, which is likely dominated by anisotropi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1409.2043v1-abstract-full').style.display = 'inline'; document.getElementById('1409.2043v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1409.2043v1-abstract-full" style="display: none;"> A data-driven method was applied to measurements of Au+Au collisions at $\sqrt{s_{_{\rm NN}}} =$ 200 GeV made with the STAR detector at RHIC to isolate pseudorapidity distance $螖畏$-dependent and $螖畏$-independent correlations by using two- and four-particle azimuthal cumulant measurements. We identified a component of the correlation that is $螖畏$-independent, which is likely dominated by anisotropic flow and flow fluctuations. It was also found to be independent of $畏$ within the measured range of pseudorapidity $|畏|<1$. The relative flow fluctuation was found to be $34\% \pm 2\% (stat.) \pm 3\% (sys.)$ for particles of transverse momentum $p_{T}$ less than $2$ GeV/$c$. The $螖畏$-dependent part may be attributed to nonflow correlations, and is found to be $5\% \pm 2\% (sys.)$ relative to the flow of the measured second harmonic cumulant at $|螖畏| > 0.7$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1409.2043v1-abstract-full').style.display = 'none'; document.getElementById('1409.2043v1-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 September, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Lett. B 745 (2015) 40 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1408.5017">arXiv:1408.5017</a> <span> [<a href="https://arxiv.org/pdf/1408.5017">pdf</a>, <a href="https://arxiv.org/format/1408.5017">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.91.034905">10.1103/PhysRevC.91.034905 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Charged-to-neutral correlation at forward rapidity in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Abdelwahab%2C+N+M">N. M. Abdelwahab</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai%2C+P">P. Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordyuzhin%2C+I+G">I. G. Bordyuzhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Borowski%2C+W">W. Borowski</a> , et al. (326 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="1408.5017v1-abstract-short" style="display: inline;"> Event-by-event fluctuations of the ratio of inclusive charged to photon multiplicities at forward rapidity in Au+Au collision at $\sqrt{s_{NN}}$=200 GeV have been studied. Dominant contribution to such fluctuations is expected to come from correlated production of charged and neutral pions. We search for evidences of dynamical fluctuations of different physical origins. Observables constructed out… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1408.5017v1-abstract-full').style.display = 'inline'; document.getElementById('1408.5017v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1408.5017v1-abstract-full" style="display: none;"> Event-by-event fluctuations of the ratio of inclusive charged to photon multiplicities at forward rapidity in Au+Au collision at $\sqrt{s_{NN}}$=200 GeV have been studied. Dominant contribution to such fluctuations is expected to come from correlated production of charged and neutral pions. We search for evidences of dynamical fluctuations of different physical origins. Observables constructed out of moments of multiplicities are used as measures of fluctuations. Mixed events and model calculations are used as baselines. Results are compared to the dynamical net-charge fluctuations measured in the same acceptance. A non-zero statistically significant signal of dynamical fluctuations is observed in excess to the model prediction when charged particles and photons are measured in the same acceptance. We find that, unlike dynamical net-charge fluctuation, charge-neutral fluctuation is not dominated by correlation due to particle decay. Results are compared to the expectations based on the generic production mechanism of pions due to isospin symmetry, for which no significant (<1%) deviation is observed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1408.5017v1-abstract-full').style.display = 'none'; document.getElementById('1408.5017v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 August, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 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">14 pages, 6 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 91, 034905 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1405.5134">arXiv:1405.5134</a> <span> [<a href="https://arxiv.org/pdf/1405.5134">pdf</a>, <a href="https://arxiv.org/format/1405.5134">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.115.092002">10.1103/PhysRevLett.115.092002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Precision Measurement of the Longitudinal Double-spin Asymmetry for Inclusive Jet Production in Polarized Proton Collisions at $\sqrt{s}=200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai%2C+P">P. Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordyuzhin%2C+I+G">I. G. Bordyuzhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Borowski%2C+W">W. Borowski</a> , et al. (336 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1405.5134v1-abstract-short" style="display: inline;"> We report a new high-precision measurement of the mid-rapidity inclusive jet longitudinal double-spin asymmetry, $A_{LL}$, in polarized $pp$ collisions at center-of-mass energy $\sqrt{s}=200$ GeV. The STAR data place stringent constraints on polarized parton distribution functions extracted at next-to-leading order from global analyses of inclusive deep inelastic scattering (DIS), semi-inclusive D… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1405.5134v1-abstract-full').style.display = 'inline'; document.getElementById('1405.5134v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1405.5134v1-abstract-full" style="display: none;"> We report a new high-precision measurement of the mid-rapidity inclusive jet longitudinal double-spin asymmetry, $A_{LL}$, in polarized $pp$ collisions at center-of-mass energy $\sqrt{s}=200$ GeV. The STAR data place stringent constraints on polarized parton distribution functions extracted at next-to-leading order from global analyses of inclusive deep inelastic scattering (DIS), semi-inclusive DIS, and RHIC $pp$ data. The measured asymmetries provide evidence for positive gluon polarization in the Bjorken-$x$ region $x>0.05$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1405.5134v1-abstract-full').style.display = 'none'; document.getElementById('1405.5134v1-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, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">7 pages, 3 figures</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, 092002 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1405.2882">arXiv:1405.2882</a> <span> [<a href="https://arxiv.org/pdf/1405.2882">pdf</a>, <a href="https://arxiv.org/format/1405.2882">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</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"> PandaX: A Liquid Xenon Dark Matter Experiment at CJPL </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Cao%2C+X+G">X. G. Cao</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+X">X. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Cui%2C+X+Y">X. Y. Cui</a>, <a href="/search/nucl-ex?searchtype=author&query=Fang%2C+D+Q">D. Q. Fang</a>, <a href="/search/nucl-ex?searchtype=author&query=Fu%2C+C+B">C. B. Fu</a>, <a href="/search/nucl-ex?searchtype=author&query=Giboni%2C+K+L">K. L. Giboni</a>, <a href="/search/nucl-ex?searchtype=author&query=Gong%2C+H+W">H. W. Gong</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+G+D">G. D. Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+M">M. He</a>, <a href="/search/nucl-ex?searchtype=author&query=Hu%2C+J">J. Hu</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+X+T">X. T. Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Ji%2C+X+D">X. D. Ji</a>, <a href="/search/nucl-ex?searchtype=author&query=Ju%2C+Y+L">Y. L. Ju</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+S+L">S. L. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Lin%2C+Q">Q. Lin</a>, <a href="/search/nucl-ex?searchtype=author&query=Liu%2C+H+X">H. X. Liu</a>, <a href="/search/nucl-ex?searchtype=author&query=Liu%2C+J+L">J. L. Liu</a>, <a href="/search/nucl-ex?searchtype=author&query=Liu%2C+X">X. Liu</a>, <a href="/search/nucl-ex?searchtype=author&query=Lorenzon%2C+W">W. Lorenzon</a>, <a href="/search/nucl-ex?searchtype=author&query=Ma%2C+Y+G">Y. G. Ma</a>, <a href="/search/nucl-ex?searchtype=author&query=Mao%2C+Y+J">Y. J. Mao</a>, <a href="/search/nucl-ex?searchtype=author&query=Ni%2C+K+X">K. X. Ni</a>, <a href="/search/nucl-ex?searchtype=author&query=Pushkin%2C+K">K. Pushkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Ren%2C+X+X">X. X. Ren</a> , et al. (25 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="1405.2882v1-abstract-short" style="display: inline;"> PandaX is a large upgradable liquid-xenon detector system that can be used for both direct dark-matter detection and $^{136}$Xe double-beta decay search. It is located in the Jinping Deep-Underground Laboratory in Sichuan, China. The detector operates in dual-phase mode, allowing detection of both prompt scintillation, and ionization charge through proportional scintillation. The central time proj… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1405.2882v1-abstract-full').style.display = 'inline'; document.getElementById('1405.2882v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1405.2882v1-abstract-full" style="display: none;"> PandaX is a large upgradable liquid-xenon detector system that can be used for both direct dark-matter detection and $^{136}$Xe double-beta decay search. It is located in the Jinping Deep-Underground Laboratory in Sichuan, China. The detector operates in dual-phase mode, allowing detection of both prompt scintillation, and ionization charge through proportional scintillation. The central time projection chamber will be staged, with the first stage accommodating a target mass of about 120\,kg. In stage II, the target mass will be increased to about 0.5\,ton. In the final stage, the detector can be upgraded to a multi-ton target mass. In this paper a detailed description of the stage-I detector design and performance results established during the commissioning phase is presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1405.2882v1-abstract-full').style.display = 'none'; document.getElementById('1405.2882v1-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 May, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">28 pages, 23 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1404.6880">arXiv:1404.6880</a> <span> [<a href="https://arxiv.org/pdf/1404.6880">pdf</a>, <a href="https://arxiv.org/format/1404.6880">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.113.072301">10.1103/PhysRevLett.113.072301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of longitudinal spin asymmetries for weak boson production in polarized proton-proton collisions at RHIC </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai%2C+P">P. Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordyuzhin%2C+I+G">I. G. Bordyuzhin</a> , et al. (336 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1404.6880v2-abstract-short" style="display: inline;"> We report measurements of single- and double- spin asymmetries for $W^{\pm}$ and $Z/纬^*$ boson production in longitudinally polarized $p+p$ collisions at $\sqrt{s} = 510$ GeV by the STAR experiment at RHIC. The asymmetries for $W^{\pm}$ were measured as a function of the decay lepton pseudorapidity, which provides a theoretically clean probe of the proton's polarized quark distributions at the sca… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1404.6880v2-abstract-full').style.display = 'inline'; document.getElementById('1404.6880v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1404.6880v2-abstract-full" style="display: none;"> We report measurements of single- and double- spin asymmetries for $W^{\pm}$ and $Z/纬^*$ boson production in longitudinally polarized $p+p$ collisions at $\sqrt{s} = 510$ GeV by the STAR experiment at RHIC. The asymmetries for $W^{\pm}$ were measured as a function of the decay lepton pseudorapidity, which provides a theoretically clean probe of the proton's polarized quark distributions at the scale of the $W$ mass. The results are compared to theoretical predictions, constrained by recent polarized deep inelastic scattering measurements, and show a preference for a sizable, positive up antiquark polarization in the range $0.05<x<0.2$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1404.6880v2-abstract-full').style.display = 'none'; document.getElementById('1404.6880v2-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 August, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 April, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">7 pages, 5 figures, Submitted to Physical Review Letters; replaced with published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 113, 072301 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1404.6185">arXiv:1404.6185</a> <span> [<a href="https://arxiv.org/pdf/1404.6185">pdf</a>, <a href="https://arxiv.org/ps/1404.6185">ps</a>, <a href="https://arxiv.org/format/1404.6185">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.113.142301">10.1103/PhysRevLett.113.142301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of $D^0$ meson nuclear modifications in Au+Au collisions at $\sqrt{s_{_{\mathrm{NN}}}}$ = 200 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai%2C+P">P. Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordyuzhin%2C+I+G">I. G. Bordyuzhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Borowski%2C+W">W. Borowski</a>, <a href="/search/nucl-ex?searchtype=author&query=Bouchet%2C+J">J. Bouchet</a> , et al. (333 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="1404.6185v3-abstract-short" style="display: inline;"> We report the first measurement of charmed-hadron ($D^0$) production via the hadronic decay channel ($D^0\rightarrow K^- + 蟺^+$) in Au+Au collisions at $\sqrt{s_{_{\mathrm{NN}}}}$ = 200\,GeV with the STAR experiment. The charm production cross-section per nucleon-nucleon collision at mid-rapidity scales with the number of binary collisions, $N_{bin}$, from $p$+$p$ to central Au+Au collisions. The… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1404.6185v3-abstract-full').style.display = 'inline'; document.getElementById('1404.6185v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1404.6185v3-abstract-full" style="display: none;"> We report the first measurement of charmed-hadron ($D^0$) production via the hadronic decay channel ($D^0\rightarrow K^- + 蟺^+$) in Au+Au collisions at $\sqrt{s_{_{\mathrm{NN}}}}$ = 200\,GeV with the STAR experiment. The charm production cross-section per nucleon-nucleon collision at mid-rapidity scales with the number of binary collisions, $N_{bin}$, from $p$+$p$ to central Au+Au collisions. The $D^0$ meson yields in central Au+Au collisions are strongly suppressed compared to those in $p$+$p$ scaled by $N_{bin}$, for transverse momenta $p_{T}>3$ GeV/$c$, demonstrating significant energy loss of charm quarks in the hot and dense medium. An enhancement at intermediate $p_{T}$ is also observed. Model calculations including strong charm-medium interactions and coalescence hadronization describe our measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1404.6185v3-abstract-full').style.display = 'none'; document.getElementById('1404.6185v3-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, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 April, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">7 pages including author list, 4 figures, submit to PRL with revised version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 113, 142301 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1404.1433">arXiv:1404.1433</a> <span> [<a href="https://arxiv.org/pdf/1404.1433">pdf</a>, <a href="https://arxiv.org/ps/1404.1433">ps</a>, <a href="https://arxiv.org/format/1404.1433">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.113.052302">10.1103/PhysRevLett.113.052302 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Beam-energy dependence of charge separation along the magnetic field in Au+Au collisions at RHIC </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai%2C+P">P. Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordyuzhin%2C+I+G">I. G. Bordyuzhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Borowski%2C+W">W. Borowski</a> , et al. (334 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="1404.1433v2-abstract-short" style="display: inline;"> Local parity-odd domains are theorized to form inside a Quark-Gluon-Plasma (QGP) which has been produced in high-energy heavy-ion collisions. The local parity-odd domains manifest themselves as charge separation along the magnetic field axis via the chiral magnetic effect (CME). The experimental observation of charge separation has previously been reported for heavy-ion collisions at the top RHIC… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1404.1433v2-abstract-full').style.display = 'inline'; document.getElementById('1404.1433v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1404.1433v2-abstract-full" style="display: none;"> Local parity-odd domains are theorized to form inside a Quark-Gluon-Plasma (QGP) which has been produced in high-energy heavy-ion collisions. The local parity-odd domains manifest themselves as charge separation along the magnetic field axis via the chiral magnetic effect (CME). The experimental observation of charge separation has previously been reported for heavy-ion collisions at the top RHIC energies. In this paper, we present the results of the beam-energy dependence of the charge correlations in Au+Au collisions at midrapidity for center-of-mass energies of 7.7, 11.5, 19.6, 27, 39 and 62.4 GeV from the STAR experiment. After background subtraction, the signal gradually reduces with decreased beam energy, and tends to vanish by 7.7 GeV. The implications of these results for the CME will be discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1404.1433v2-abstract-full').style.display = 'none'; document.getElementById('1404.1433v2-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> 15 July, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 April, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">6 pages, 4 figures, accepted by Phys. Rev. Lett (more model comparisons have been added in version 2)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 113, 052302 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1403.4972">arXiv:1403.4972</a> <span> [<a href="https://arxiv.org/pdf/1403.4972">pdf</a>, <a href="https://arxiv.org/ps/1403.4972">ps</a>, <a href="https://arxiv.org/format/1403.4972">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.92.014904">10.1103/PhysRevC.92.014904 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Beam energy dependent two-pion interferometry and the freeze-out eccentricity of pions in heavy ion collisions at STAR </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai%2C+P">P. Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordyuzhin%2C+I+G">I. G. Bordyuzhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Borowski%2C+W">W. Borowski</a> , et al. (334 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="1403.4972v1-abstract-short" style="display: inline;"> We present results of analyses of two-pion interferometry in Au+Au collisions at $\sqrt{s_{NN}}$ = 7.7, 11.5, 19.6, 27, 39, 62.4 and 200 GeV measured in the STAR detector as part of the RHIC Beam Energy Scan program. The extracted correlation lengths (HBT radii) are studied as a function of beam energy, azimuthal angle relative to the reaction plane, centrality, and transverse mass ($m_{T}$) of th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1403.4972v1-abstract-full').style.display = 'inline'; document.getElementById('1403.4972v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1403.4972v1-abstract-full" style="display: none;"> We present results of analyses of two-pion interferometry in Au+Au collisions at $\sqrt{s_{NN}}$ = 7.7, 11.5, 19.6, 27, 39, 62.4 and 200 GeV measured in the STAR detector as part of the RHIC Beam Energy Scan program. The extracted correlation lengths (HBT radii) are studied as a function of beam energy, azimuthal angle relative to the reaction plane, centrality, and transverse mass ($m_{T}$) of the particles. The azimuthal analysis allows extraction of the eccentricity of the entire fireball at kinetic freeze-out. The energy dependence of this observable is expected to be sensitive to changes in the equation of state. A new global fit method is studied as an alternate method to directly measure the parameters in the azimuthal analysis. The eccentricity shows a monotonic decrease with beam energy that is qualitatively consistent with the trend from all model predictions and quantitatively consistent with a hadronic transport model. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1403.4972v1-abstract-full').style.display = 'none'; document.getElementById('1403.4972v1-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 March, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">27 pages; 27 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 92, 014904 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1401.3043">arXiv:1401.3043</a> <span> [<a href="https://arxiv.org/pdf/1401.3043">pdf</a>, <a href="https://arxiv.org/ps/1401.3043">ps</a>, <a href="https://arxiv.org/format/1401.3043">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.112.162301">10.1103/PhysRevLett.112.162301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Beam-Energy Dependence of Directed Flow of Protons, Antiprotons and Pions in Au+Au Collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai%2C+P">P. Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordyuzhin%2C+I+G">I. G. Bordyuzhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Borowski%2C+W">W. Borowski</a> , et al. (332 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="1401.3043v2-abstract-short" style="display: inline;"> Rapidity-odd directed flow($v_1$) measurements for charged pions, protons and antiprotons near mid-rapidity ($y=0$) are reported in $\sqrt{s_{NN}} =$ 7.7, 11.5, 19.6, 27, 39, 62.4 and 200 GeV Au + Au collisions as recorded by the STAR detector at the Relativistic Heavy Ion Collider (RHIC). At intermediate impact parameters, the proton and net-proton slope parameter $dv_1/dy|_{y=0}$ shows a minimum… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1401.3043v2-abstract-full').style.display = 'inline'; document.getElementById('1401.3043v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1401.3043v2-abstract-full" style="display: none;"> Rapidity-odd directed flow($v_1$) measurements for charged pions, protons and antiprotons near mid-rapidity ($y=0$) are reported in $\sqrt{s_{NN}} =$ 7.7, 11.5, 19.6, 27, 39, 62.4 and 200 GeV Au + Au collisions as recorded by the STAR detector at the Relativistic Heavy Ion Collider (RHIC). At intermediate impact parameters, the proton and net-proton slope parameter $dv_1/dy|_{y=0}$ shows a minimum between 11.5 and 19.6 GeV. In addition, the net-proton $dv_1/dy|_{y=0}$ changes sign twice between 7.7 and 39 GeV. The proton and net-proton results qualitatively resemble predictions of a hydrodynamic model with a first-order phase transition from hadronic matter to deconfined matter, and differ from hadronic transport calculations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1401.3043v2-abstract-full').style.display = 'none'; document.getElementById('1401.3043v2-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, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 January, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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">Post-referee version, accepted by PRL. Fig. 2 now includes panels for 62.4 and 200 GeV</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1312.7397">arXiv:1312.7397</a> <span> [<a href="https://arxiv.org/pdf/1312.7397">pdf</a>, <a href="https://arxiv.org/ps/1312.7397">ps</a>, <a href="https://arxiv.org/format/1312.7397">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.113.022301">10.1103/PhysRevLett.113.022301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Dielectron Mass Spectra from Au+Au Collisions at $\sqrt{s_{\rm NN}}$ = 200 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai%2C+P">P. Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordyuzhin%2C+I+G">I. G. Bordyuzhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Borowski%2C+W">W. Borowski</a> , et al. (331 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="1312.7397v4-abstract-short" style="display: inline;"> We report the STAR measurements of dielectron ($e^+e^-$) production at midrapidity ($|y_{ee}|<$1) in Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 200\,GeV. The measurements are evaluated in different invariant mass regions with a focus on 0.30-0.76 ($蟻$-like), 0.76-0.80 ($蠅$-like), and 0.98-1.05 ($蠁$-like) GeV/$c^{2}$. The spectrum in the $蠅$-like and $蠁$-like regions can be well described by the had… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1312.7397v4-abstract-full').style.display = 'inline'; document.getElementById('1312.7397v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1312.7397v4-abstract-full" style="display: none;"> We report the STAR measurements of dielectron ($e^+e^-$) production at midrapidity ($|y_{ee}|<$1) in Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 200\,GeV. The measurements are evaluated in different invariant mass regions with a focus on 0.30-0.76 ($蟻$-like), 0.76-0.80 ($蠅$-like), and 0.98-1.05 ($蠁$-like) GeV/$c^{2}$. The spectrum in the $蠅$-like and $蠁$-like regions can be well described by the hadronic cocktail simulation. In the $蟻$-like region, however, the vacuum $蟻$ spectral function cannot describe the shape of the dielectron excess. In this range, an enhancement of 1.77$\pm$0.11(stat.)$\pm$0.24(sys.)$\pm$0.33(cocktail) is determined with respect to the hadronic cocktail simulation that excludes the $蟻$ meson. The excess yield in the $蟻$-like region increases with the number of collision participants faster than the $蠅$ and $蠁$ yields. Theoretical models with broadened $蟻$ contributions through interactions with constituents in the hot QCD medium provide a consistent description of the dilepton mass spectra for the measurement presented here and the earlier data at the Super Proton Synchrotron energies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1312.7397v4-abstract-full').style.display = 'none'; document.getElementById('1312.7397v4-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> 15 July, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 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">Journal ref:</span> Phys. Rev. Lett. 113, 022301 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1312.3675">arXiv:1312.3675</a> <span> [<a href="https://arxiv.org/pdf/1312.3675">pdf</a>, <a href="https://arxiv.org/format/1312.3675">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2014.06.028">10.1016/j.physletb.2014.06.028 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Suppression of Upsilon Production in d+Au and Au+Au Collisions at sqrt(s_NN) = 200 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai%2C+P">P. Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordyuzhin%2C+I+G">I. G. Bordyuzhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Borowski%2C+W">W. Borowski</a>, <a href="/search/nucl-ex?searchtype=author&query=Bouchet%2C+J">J. Bouchet</a> , et al. (335 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1312.3675v3-abstract-short" style="display: inline;"> We report measurements of Upsilon meson production in p+p, d+Au, and Au+Au collisions using the STAR detector at RHIC. We compare the Upsilon yield to the measured cross section in p+p collisions in order to quantify any modifications of the yield in cold nuclear matter using d+Au data and in hot nuclear matter using Au+Au data separated into three centrality classes. Our p+p measurement is based… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1312.3675v3-abstract-full').style.display = 'inline'; document.getElementById('1312.3675v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1312.3675v3-abstract-full" style="display: none;"> We report measurements of Upsilon meson production in p+p, d+Au, and Au+Au collisions using the STAR detector at RHIC. We compare the Upsilon yield to the measured cross section in p+p collisions in order to quantify any modifications of the yield in cold nuclear matter using d+Au data and in hot nuclear matter using Au+Au data separated into three centrality classes. Our p+p measurement is based on three times the statistics of our previous result. We obtain a nuclear modification factor for Upsilon(1S+2S+3S) in the rapidity range |y|<1 in d+Au collisions of R_dAu = 0.79 +/- 0.24 (stat.) +/- 0.03 (sys.) +/- 0.10 (pp sys.). A comparison with models including shadowing and initial state parton energy loss indicates the presence of additional cold-nuclear matter suppression. Similarly, in the top 10% most-central Au+Au collisions, we measure a nuclear modification factor of R_AA=0.49 +/- 0.1 (stat.) +/- 0.02 (sys.) +/- 0.06 (pp sys.), which is a larger suppression factor than that seen in cold nuclear matter. Our results are consistent with complete suppression of excited-state Upsilon mesons in Au+Au collisions. The additional suppression in Au+Au is consistent with the level expected in model calculations that include the presence of a hot, deconfined Quark-Gluon Plasma. However, understanding the suppression seen in d+Au is still needed before any definitive statements about the nature of the suppression in Au+Au can be made. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1312.3675v3-abstract-full').style.display = 'none'; document.getElementById('1312.3675v3-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 January, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 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">13 pages, 7 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Lett. B 735 (2014) 127 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1311.1621">arXiv:1311.1621</a> <span> [<a href="https://arxiv.org/pdf/1311.1621">pdf</a>, <a href="https://arxiv.org/ps/1311.1621">ps</a>, <a href="https://arxiv.org/format/1311.1621">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2014.10.049">10.1016/j.physletb.2014.10.049 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> $J/蠄$ polarization in p+p collisions at $\sqrt{s}$ = 200 GeV in STAR </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai%2C+P">P. Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a> , et al. (334 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="1311.1621v2-abstract-short" style="display: inline;"> We report on a polarization measurement of inclusive $J/蠄$ mesons in the di-electron decay channel at mid-rapidity at 2 $<p_{T}<$ 6 GeV/$c$ in $p+p$ collisions at $\sqrt{s}$ = 200 GeV. Data were taken with the STAR detector at RHIC. The $J/蠄$ polarization measurement should help to distinguish between different models of the $J/蠄$ production mechanism since they predict different $p_{T}$ dependenc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1311.1621v2-abstract-full').style.display = 'inline'; document.getElementById('1311.1621v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1311.1621v2-abstract-full" style="display: none;"> We report on a polarization measurement of inclusive $J/蠄$ mesons in the di-electron decay channel at mid-rapidity at 2 $<p_{T}<$ 6 GeV/$c$ in $p+p$ collisions at $\sqrt{s}$ = 200 GeV. Data were taken with the STAR detector at RHIC. The $J/蠄$ polarization measurement should help to distinguish between different models of the $J/蠄$ production mechanism since they predict different $p_{T}$ dependences of the $J/蠄$ polarization. In this analysis, $J/蠄$ polarization is studied in the helicity frame. The polarization parameter $位_胃$ measured at RHIC becomes smaller towards high $p_{T}$, indicating more longitudinal $J/蠄$ polarization as $p_{T}$ increases. The result is compared with predictions of presently available models. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1311.1621v2-abstract-full').style.display = 'none'; document.getElementById('1311.1621v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 November, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 November, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">11 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> WUT-13-01 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1310.3563">arXiv:1310.3563</a> <span> [<a href="https://arxiv.org/pdf/1310.3563">pdf</a>, <a href="https://arxiv.org/format/1310.3563">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.90.024906">10.1103/PhysRevC.90.024906 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> $J/蠄$ production at low $p_T$ in Au+Au and Cu+Cu collisions at $\sqrt{s_{_{NN}}}$ = 200 GeV at STAR </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai%2C+P">P. Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a> , et al. (333 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="1310.3563v2-abstract-short" style="display: inline;"> The $\jpsi$ $\pt$ spectrum and nuclear modification factor ($\raa$) are reported for $\pt < 5 \ \gevc$ and $|y|<1$ from 0\% to 60\% central Au+Au and Cu+Cu collisions at $\snn = 200 \ \gev$ at STAR. A significant suppression of $\pt$-integrated $\jpsi$ production is observed in central Au+Au events. The Cu+Cu data are consistent with no suppression, although the precision is limited by the availab… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1310.3563v2-abstract-full').style.display = 'inline'; document.getElementById('1310.3563v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1310.3563v2-abstract-full" style="display: none;"> The $\jpsi$ $\pt$ spectrum and nuclear modification factor ($\raa$) are reported for $\pt < 5 \ \gevc$ and $|y|<1$ from 0\% to 60\% central Au+Au and Cu+Cu collisions at $\snn = 200 \ \gev$ at STAR. A significant suppression of $\pt$-integrated $\jpsi$ production is observed in central Au+Au events. The Cu+Cu data are consistent with no suppression, although the precision is limited by the available statistics. $\raa$ in Au+Au collisions exhibits a strong suppression at low transverse momentum and gradually increases with $\pt$. The data are compared to high-$\pt$ STAR results and previously published BNL Relativistic Heavy Ion Collider results. Comparing with model calculations, it is found that the invariant yields at low $\pt$ are significantly above hydrodynamic flow predictions but are consistent with models that include color screening and regeneration. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1310.3563v2-abstract-full').style.display = 'none'; document.getElementById('1310.3563v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 September, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 October, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">14 pages, 13 figures. Accepted by Phys. Rev. C</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 90, 024906 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1309.5681">arXiv:1309.5681</a> <span> [<a href="https://arxiv.org/pdf/1309.5681">pdf</a>, <a href="https://arxiv.org/ps/1309.5681">ps</a>, <a href="https://arxiv.org/format/1309.5681">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Lattice">hep-lat</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.112.032302">10.1103/PhysRevLett.112.032302 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Energy Dependence of Moments of Net-proton Multiplicity Distributions at RHIC </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai%2C+P">P. Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a> , et al. (333 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="1309.5681v1-abstract-short" style="display: inline;"> We report the beam energy (\sqrt s_{NN} = 7.7 - 200 GeV) and collision centrality dependence of the mean (M), standard deviation (蟽), skewness (S), and kurtosis (魏) of the net-proton multiplicity distributions in Au+Au collisions. The measurements are carried out by the STAR experiment at midrapidity (|y| < 0.5) and within the transverse momentum range 0.4 < pT < 0.8 GeV/c in the first phase of th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1309.5681v1-abstract-full').style.display = 'inline'; document.getElementById('1309.5681v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1309.5681v1-abstract-full" style="display: none;"> We report the beam energy (\sqrt s_{NN} = 7.7 - 200 GeV) and collision centrality dependence of the mean (M), standard deviation (蟽), skewness (S), and kurtosis (魏) of the net-proton multiplicity distributions in Au+Au collisions. The measurements are carried out by the STAR experiment at midrapidity (|y| < 0.5) and within the transverse momentum range 0.4 < pT < 0.8 GeV/c in the first phase of the Beam Energy Scan program at the Relativistic Heavy Ion Collider. These measurements are important for understanding the Quantum Chromodynamic (QCD) phase diagram. The products of the moments, S蟽and 魏蟽^{2}, are sensitive to the correlation length of the hot and dense medium created in the collisions and are related to the ratios of baryon number susceptibilities of corresponding orders. The products of moments are found to have values significantly below the Skellam expectation and close to expectations based on independent proton and anti-proton production. The measurements are compared to a transport model calculation to understand the effect of acceptance and baryon number conservation, and also to a hadron resonance gas model. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1309.5681v1-abstract-full').style.display = 'none'; document.getElementById('1309.5681v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 September, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">7 pages and 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 112 (2014) 032302 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1309.1800">arXiv:1309.1800</a> <span> [<a href="https://arxiv.org/pdf/1309.1800">pdf</a>, <a href="https://arxiv.org/ps/1309.1800">ps</a>, <a href="https://arxiv.org/format/1309.1800">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.89.012001">10.1103/PhysRevD.89.012001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Neutral pion cross section and spin asymmetries at intermediate pseudorapidity in polarized proton collisions at sqrt{s} = 200 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Barber%2C+B">B. Barber</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai%2C+P">P. Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a> , et al. (341 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="1309.1800v2-abstract-short" style="display: inline;"> The differential cross section and spin asymmetries for neutral pions produced within the intermediate pseudorapidity range 0.8 < 畏 < 2.0 in polarized proton-proton collisions at sqrt{s} = 200 GeV are presented. Neutral pions were detected using the endcap electromagnetic calorimeter in the STAR detector at RHIC. The cross section was measured over a transverse momentum range of 5 < p_T < 16 GeV/c… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1309.1800v2-abstract-full').style.display = 'inline'; document.getElementById('1309.1800v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1309.1800v2-abstract-full" style="display: none;"> The differential cross section and spin asymmetries for neutral pions produced within the intermediate pseudorapidity range 0.8 < 畏 < 2.0 in polarized proton-proton collisions at sqrt{s} = 200 GeV are presented. Neutral pions were detected using the endcap electromagnetic calorimeter in the STAR detector at RHIC. The cross section was measured over a transverse momentum range of 5 < p_T < 16 GeV/c and is found to be within the scale uncertainty of a next-to-leading order perturbative QCD calculation. The longitudinal double-spin asymmetry, A_LL, is measured in the same pseudorapidity range. This quantity is sensitive to the gluonic contribution to the proton spin, 螖g(x), at low Bjorken-x (down to x approx 0.01), where it is less constrained by measurements at central pseudorapidity. The measured A_LL is consistent with model predictions. The parity-violating asymmetry, A_L, is also measured and found to be consistent with zero. The transverse single-spin asymmetry, A_N, is measured within a previously unexplored kinematic range in Feynman-x and p_T. Such measurements may aid our understanding of the on-set and kinematic dependence of the large asymmetries observed at more forward pseudorapidity (畏 approx 3) and their underlying mechanisms. The A_N results presented are consistent with a twist-3 model prediction of a small asymmetry within the present kinematic range. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1309.1800v2-abstract-full').style.display = 'none'; document.getElementById('1309.1800v2-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 December, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 September, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">11 pages, 9 figures, REVTeX 4.1, Submitted to Phys. Rev. D. Changes for version 2: minor textual updates, modified discussion of gluonic polarization, clarified description of Fig. 4, and corrected sign convention in Fig. 8</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 89, 012001 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1303.0901">arXiv:1303.0901</a> <span> [<a href="https://arxiv.org/pdf/1303.0901">pdf</a>, <a href="https://arxiv.org/ps/1303.0901">ps</a>, <a href="https://arxiv.org/format/1303.0901">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="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.89.044908">10.1103/PhysRevC.89.044908 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of Charge Multiplicity Asymmetry Correlations in High Energy Nucleus-Nucleus Collisions at 200 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alakhverdyants%2C+A+V">A. V. Alakhverdyants</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E">E. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Betancourt%2C+M+J">M. J. Betancourt</a>, <a href="/search/nucl-ex?searchtype=author&query=Betts%2C+R+R">R. R. Betts</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a> , et al. (340 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="1303.0901v2-abstract-short" style="display: inline;"> A study is reported of the same- and opposite-sign charge-dependent azimuthal correlations with respect to the event plane in Au+Au collisions at 200 GeV. The charge multiplicity asymmetries between the up/down and left/right hemispheres relative to the event plane are utilized. The contributions from statistical fluctuations and detector effects were subtracted from the (co-)variance of the obser… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1303.0901v2-abstract-full').style.display = 'inline'; document.getElementById('1303.0901v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1303.0901v2-abstract-full" style="display: none;"> A study is reported of the same- and opposite-sign charge-dependent azimuthal correlations with respect to the event plane in Au+Au collisions at 200 GeV. The charge multiplicity asymmetries between the up/down and left/right hemispheres relative to the event plane are utilized. The contributions from statistical fluctuations and detector effects were subtracted from the (co-)variance of the observed charge multiplicity asymmetries. In the mid- to most-central collisions, the same- (opposite-) sign pairs are preferentially emitted in back-to-back (aligned on the same-side) directions. The charge separation across the event plane, measured by the difference, $螖$, between the like- and unlike-sign up/down $-$ left/right correlations, is largest near the event plane. The difference is found to be proportional to the event-by-event final-state particle ellipticity (via the observed second-order harmonic $v^{\rm obs}_{2}$), where $螖=(1.3\pm1.4({\rm stat})^{+4.0}_{-1.0}({\rm syst}))\times10^{-5}+(3.2\pm0.2({\rm stat})^{+0.4}_{-0.3}({\rm syst}))\times10^{-3}v^{\rm obs}_{2}$ for 20-40% Au+Au collisions. The implications for the proposed chiral magnetic effect are discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1303.0901v2-abstract-full').style.display = 'none'; document.getElementById('1303.0901v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 April, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 March, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">27 pages, 25 figures, 2 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> L. Adamczyk et al. (STAR Collaboration), Phys. Rev. C 89 (2014) 044908 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1302.6184">arXiv:1302.6184</a> <span> [<a href="https://arxiv.org/pdf/1302.6184">pdf</a>, <a href="https://arxiv.org/format/1302.6184">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.112.122301">10.1103/PhysRevLett.112.122301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Jet-Hadron Correlations in sqrt{s_{NN}} = 200 GeV p+p and Central Au+Au Collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai%2C+P">P. Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordyuzhin%2C+I+G">I. G. Bordyuzhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Borowski%2C+W">W. Borowski</a> , et al. (332 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="1302.6184v2-abstract-short" style="display: inline;"> Azimuthal angular correlations of charged hadrons with respect to the axis of a reconstructed (trigger) jet in Au+Au and p+p collisions at $\sqrt{s_{\text{NN}}} = 200 \text{GeV}$ in STAR are presented. The trigger jet population in Au+Au collisions is biased towards jets that have not interacted with the medium, allowing easier matching of jet energies between Au+Au and p+p collisions while enhanc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1302.6184v2-abstract-full').style.display = 'inline'; document.getElementById('1302.6184v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1302.6184v2-abstract-full" style="display: none;"> Azimuthal angular correlations of charged hadrons with respect to the axis of a reconstructed (trigger) jet in Au+Au and p+p collisions at $\sqrt{s_{\text{NN}}} = 200 \text{GeV}$ in STAR are presented. The trigger jet population in Au+Au collisions is biased towards jets that have not interacted with the medium, allowing easier matching of jet energies between Au+Au and p+p collisions while enhancing medium effects on the recoil jet. The associated hadron yield of the recoil jet is significantly suppressed at high transverse momentum ($p_{\text{T}}^{\text{assoc}}$) and enhanced at low $p_{\text{T}}^{\text{assoc}}$ in 0-20% central Au+Au collisions compared to p+p collisions, which is indicative of medium-induced parton energy loss in ultrarelativistic heavy-ion collisions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1302.6184v2-abstract-full').style.display = 'none'; document.getElementById('1302.6184v2-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 May, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 February, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">v2 is the version accepted by PRL</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 112, 122301 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1302.3802">arXiv:1302.3802</a> <span> [<a href="https://arxiv.org/pdf/1302.3802">pdf</a>, <a href="https://arxiv.org/ps/1302.3802">ps</a>, <a href="https://arxiv.org/format/1302.3802">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Fluctuations of charge separation perpendicular to the event plane and local parity violation in sqrt(sNN)=200 GeV Au+Au collisions at RHIC </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E">E. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Betancourt%2C+M+J">M. J. Betancourt</a>, <a href="/search/nucl-ex?searchtype=author&query=Betts%2C+R+R">R. R. Betts</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai"> Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a> , et al. (343 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="1302.3802v3-abstract-short" style="display: inline;"> Previous experimental results based on data (15 million events) collected by the STAR detector at RHIC suggest event-by-event charge separation fluctuations perpendicular to the event plane in non-central heavy-ion collisions. Here we present the correlator previously used split into its two component parts to reveal correlations parallel and perpendicular to the event plane. The results are from… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1302.3802v3-abstract-full').style.display = 'inline'; document.getElementById('1302.3802v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1302.3802v3-abstract-full" style="display: none;"> Previous experimental results based on data (15 million events) collected by the STAR detector at RHIC suggest event-by-event charge separation fluctuations perpendicular to the event plane in non-central heavy-ion collisions. Here we present the correlator previously used split into its two component parts to reveal correlations parallel and perpendicular to the event plane. The results are from a high statistics 200 GeV Au+Au collisions data set (57 million events) collected by the STAR experiment. We explicitly count units of charge separation from which we find clear evidence for more charge separation fluctuations perpendicular than parallel to the event plane. We also employ a modified correlator to study the possible P-even background in same and opposite charge correlations, and find that the P-even background may largely be explained by momentum conservation and collective motion. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1302.3802v3-abstract-full').style.display = 'none'; document.getElementById('1302.3802v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 October, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 February, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">10 pages, 9 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1302.3168">arXiv:1302.3168</a> <span> [<a href="https://arxiv.org/pdf/1302.3168">pdf</a>, <a href="https://arxiv.org/ps/1302.3168">ps</a>, <a href="https://arxiv.org/format/1302.3168">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.88.034906">10.1103/PhysRevC.88.034906 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Freeze-out Dynamics via Charged Kaon Femtoscopy in sqrt(sNN)=200 GeV Central Au+Au Collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E">E. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Betancourt%2C+M+J">M. J. Betancourt</a>, <a href="/search/nucl-ex?searchtype=author&query=Betts%2C+R+R">R. R. Betts</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai"> Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a> , et al. (343 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="1302.3168v2-abstract-short" style="display: inline;"> We present measurements of three-dimensional correlation functions of like-sign low transverse momentum kaon pairs from sqrt(sNN)=200 GeV Au+Au collisions. A Cartesian surface-spherical harmonic decomposition technique was used to extract the kaon source function. The latter was found to have a three-dimensional Gaussian shape and can be adequately reproduced by Therminator event generator simulat… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1302.3168v2-abstract-full').style.display = 'inline'; document.getElementById('1302.3168v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1302.3168v2-abstract-full" style="display: none;"> We present measurements of three-dimensional correlation functions of like-sign low transverse momentum kaon pairs from sqrt(sNN)=200 GeV Au+Au collisions. A Cartesian surface-spherical harmonic decomposition technique was used to extract the kaon source function. The latter was found to have a three-dimensional Gaussian shape and can be adequately reproduced by Therminator event generator simulations with resonance contributions taken into account. Compared to the pion one, the kaon source function is generally narrower and does not have the long tail along the pair transverse momentum direction. The kaon Gaussian radii display a monotonic decrease with increasing transverse mass m_T over the interval of 0.55<=m_T<=1.15 GeV/c^2. While the kaon radii are adequately described by the m_T-scaling in the outward and sideward directions, in the longitudinal direction the lowest m_T value exceeds the expectations from a pure hydrodynamical model prediction. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1302.3168v2-abstract-full').style.display = 'none'; document.getElementById('1302.3168v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 September, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 February, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">8 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 88, 034906 (2013) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1301.6633">arXiv:1301.6633</a> <span> [<a href="https://arxiv.org/pdf/1301.6633">pdf</a>, <a href="https://arxiv.org/ps/1301.6633">ps</a>, <a href="https://arxiv.org/format/1301.6633">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.87.064902">10.1103/PhysRevC.87.064902 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> System size dependence of transverse momentum correlations at $\sqrt{s_{NN}}=$ 62.4 and 200 GeV at the BNL Relativistic Heavy Ion Collider </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E">E. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Betancourt%2C+M+J">M. J. Betancourt</a>, <a href="/search/nucl-ex?searchtype=author&query=Betts%2C+R+R">R. R. Betts</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai"> Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a> , et al. (343 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="1301.6633v2-abstract-short" style="display: inline;"> We present a study of the average transverse momentum ($p_t$) fluctuations and $p_t$ correlations for charged particles produced in Cu+Cu collisions at midrapidity for $\sqrt{s_{NN}} =$ 62.4 and 200 GeV. These results are compared with those published for Au+Au collisions at the same energies, to explore the system size dependence. In addition to the collision energy and system size dependence, th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1301.6633v2-abstract-full').style.display = 'inline'; document.getElementById('1301.6633v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1301.6633v2-abstract-full" style="display: none;"> We present a study of the average transverse momentum ($p_t$) fluctuations and $p_t$ correlations for charged particles produced in Cu+Cu collisions at midrapidity for $\sqrt{s_{NN}} =$ 62.4 and 200 GeV. These results are compared with those published for Au+Au collisions at the same energies, to explore the system size dependence. In addition to the collision energy and system size dependence, the $p_t$ correlation results have been studied as functions of the collision centralities, the ranges in $p_t$, the pseudorapidity $畏$, and the azimuthal angle $蠁$. The square root of the measured $p_t$ correlations when scaled by mean $p_t$ is found to be independent of both colliding beam energy and system size studied. Transport-based model calculations are found to have a better quantitative agreement with the measurements compared to models which incorporate only jetlike correlations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1301.6633v2-abstract-full').style.display = 'none'; document.getElementById('1301.6633v2-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 August, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 January, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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">12 pages and 9 figures. Published in Physical Review C</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1301.2348">arXiv:1301.2348</a> <span> [<a href="https://arxiv.org/pdf/1301.2348">pdf</a>, <a href="https://arxiv.org/ps/1301.2348">ps</a>, <a href="https://arxiv.org/format/1301.2348">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.88.014902">10.1103/PhysRevC.88.014902 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Elliptic flow of identified hadrons in Au+Au collisions at $\sqrt{s_{NN}}=$ 7.7--62.4 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E">E. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Betancourt%2C+M+J">M. J. Betancourt</a>, <a href="/search/nucl-ex?searchtype=author&query=Betts%2C+R+R">R. R. Betts</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai"> Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a> , et al. (342 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="1301.2348v1-abstract-short" style="display: inline;"> Measurements of the elliptic flow, $v_{2}$, of identified hadrons ($蟺^{\pm}$, $K^{\pm}$, $K_{s}^{0}$, $p$, $\bar{p}$, $蠁$, $螞$, $\bar螞$, $螢^{-}$, $\bar螢^{+}$, $惟^{-}$, $\bar惟^{+}$) in Au+Au collisions at $\sqrt{s_{NN}}=$ 7.7, 11.5, 19.6, 27, 39 and 62.4 GeV are presented. The measurements were done at mid-rapidity using the Time Projection Chamber and the Time-of-Flight detectors of the STAR exper… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1301.2348v1-abstract-full').style.display = 'inline'; document.getElementById('1301.2348v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1301.2348v1-abstract-full" style="display: none;"> Measurements of the elliptic flow, $v_{2}$, of identified hadrons ($蟺^{\pm}$, $K^{\pm}$, $K_{s}^{0}$, $p$, $\bar{p}$, $蠁$, $螞$, $\bar螞$, $螢^{-}$, $\bar螢^{+}$, $惟^{-}$, $\bar惟^{+}$) in Au+Au collisions at $\sqrt{s_{NN}}=$ 7.7, 11.5, 19.6, 27, 39 and 62.4 GeV are presented. The measurements were done at mid-rapidity using the Time Projection Chamber and the Time-of-Flight detectors of the STAR experiment during the Beam Energy Scan program at RHIC. A significant difference in the $v_{2}$ values for particles and the corresponding anti-particles was observed at all transverse momenta for the first time. The difference increases with decreasing center-of-mass energy, $\sqrt{s_{NN}}$ (or increasing baryon chemical potential, $渭_{B}$) and is larger for the baryons as compared to the mesons. This implies that particles and anti-particles are no longer consistent with the universal number-of-constituent quark (NCQ) scaling of $v_{2}$ that was observed at $\sqrt{s_{NN}}=$ 200 GeV. However, for the group of particles NCQ scaling at $(m_{T}-m_{0})/n_{q}>$ 0.4 GeV/$c^{2}$ is not violated within $\pm$10%. The $v_{2}$ values for $蠁$ mesons at 7.7 and 11.5 GeV are approximately two standard deviations from the trend defined by the other hadrons at the highest measured $p_{T}$ values. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1301.2348v1-abstract-full').style.display = 'none'; document.getElementById('1301.2348v1-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 January, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2013. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1301.2347">arXiv:1301.2347</a> <span> [<a href="https://arxiv.org/pdf/1301.2347">pdf</a>, <a href="https://arxiv.org/ps/1301.2347">ps</a>, <a href="https://arxiv.org/format/1301.2347">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.110.142301">10.1103/PhysRevLett.110.142301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of an energy-dependent difference in elliptic flow between particles and anti-particles in relativistic heavy ion collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E">E. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Betancourt%2C+M+J">M. J. Betancourt</a>, <a href="/search/nucl-ex?searchtype=author&query=Betts%2C+R+R">R. R. Betts</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattarai"> Bhattarai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a> , et al. (342 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="1301.2347v1-abstract-short" style="display: inline;"> Elliptic flow ($v_{2}$) values for identified particles at mid-rapidity in Au+Au collisions, measured by the STAR experiment in the Beam Energy Scan at RHIC at $\sqrt{s_{NN}}=$ 7.7--62.4 GeV, are presented. A beam-energy dependent difference of the values of $v_{2}$ between particles and corresponding anti-particles was observed. The difference increases with decreasing beam energy and is larger f… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1301.2347v1-abstract-full').style.display = 'inline'; document.getElementById('1301.2347v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1301.2347v1-abstract-full" style="display: none;"> Elliptic flow ($v_{2}$) values for identified particles at mid-rapidity in Au+Au collisions, measured by the STAR experiment in the Beam Energy Scan at RHIC at $\sqrt{s_{NN}}=$ 7.7--62.4 GeV, are presented. A beam-energy dependent difference of the values of $v_{2}$ between particles and corresponding anti-particles was observed. The difference increases with decreasing beam energy and is larger for baryons compared to mesons. This implies that, at lower energies, particles and anti-particles are not consistent with the universal number-of-constituent-quark (NCQ) scaling of $v_{2}$ that was observed at $\sqrt{s_{NN}}=$ 200 GeV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1301.2347v1-abstract-full').style.display = 'none'; document.getElementById('1301.2347v1-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 January, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2013. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1301.2187">arXiv:1301.2187</a> <span> [<a href="https://arxiv.org/pdf/1301.2187">pdf</a>, <a href="https://arxiv.org/format/1301.2187">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.88.014904">10.1103/PhysRevC.88.014904 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Third Harmonic Flow of Charged Particles in Au+Au Collisions at sqrtsNN = 200 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparin%2C+A">A. Aparin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E">E. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Betancourt%2C+M+J">M. J. Betancourt</a>, <a href="/search/nucl-ex?searchtype=author&query=Betts%2C+R+R">R. R. Betts</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a> , et al. (339 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="1301.2187v2-abstract-short" style="display: inline;"> We report measurements of the third harmonic coefficient of the azimuthal anisotropy, v_3, known as triangular flow. The analysis is for charged particles in Au+Au collisions at sqrtsNN = 200 GeV, based on data from the STAR experiment at the Relativistic Heavy Ion Collider. Two-particle correlations as a function of their pseudorapidity separation are fit with narrow and wide Gaussians. Measureme… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1301.2187v2-abstract-full').style.display = 'inline'; document.getElementById('1301.2187v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1301.2187v2-abstract-full" style="display: none;"> We report measurements of the third harmonic coefficient of the azimuthal anisotropy, v_3, known as triangular flow. The analysis is for charged particles in Au+Au collisions at sqrtsNN = 200 GeV, based on data from the STAR experiment at the Relativistic Heavy Ion Collider. Two-particle correlations as a function of their pseudorapidity separation are fit with narrow and wide Gaussians. Measurements of triangular flow are extracted from the wide Gaussian, from two-particle cumulants with a pseudorapidity gap, and also from event plane analysis methods with a large pseudorapidity gap between the particles and the event plane. These results are reported as a function of transverse momentum and centrality. A large dependence on the pseudorapidity gap is found. Results are compared with other experiments and model calculations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1301.2187v2-abstract-full').style.display = 'none'; document.getElementById('1301.2187v2-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> 15 July, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 January, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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">12 pages, 12 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LBNL (2013) </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 88, 014904 (2013) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1210.0637">arXiv:1210.0637</a> <span> [<a href="https://arxiv.org/pdf/1210.0637">pdf</a>, <a href="https://arxiv.org/ps/1210.0637">ps</a>, <a href="https://arxiv.org/format/1210.0637">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/10.1088/1742-6596/420/1/012030">10.1088/1742-6596/420/1/012030 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The elliptic flow of di-electrons in $\sqrt{s_{NN}}$=200 GeV Au+Au collisions at STAR </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Cui%2C+X">Xiangli Cui</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1210.0637v1-abstract-short" style="display: inline;"> In minimum bias (0-80%) Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV, the elliptic flow ($v_{2}$) measurements for di-electrons from the low to intermediate mass region are presented. The differential elliptic flow as a function of transverse momentum in different mass regions are also reported. The simulated and measured $v_{2}$ of di-electrons are compared in the mass regions of $M_{ee}<0.14$ GeV… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1210.0637v1-abstract-full').style.display = 'inline'; document.getElementById('1210.0637v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1210.0637v1-abstract-full" style="display: none;"> In minimum bias (0-80%) Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV, the elliptic flow ($v_{2}$) measurements for di-electrons from the low to intermediate mass region are presented. The differential elliptic flow as a function of transverse momentum in different mass regions are also reported. The simulated and measured $v_{2}$ of di-electrons are compared in the mass regions of $M_{ee}<0.14$ GeV/$c^{2}$ and $0.14<M_{ee}<0.3$ GeV/$c^{2}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1210.0637v1-abstract-full').style.display = 'none'; document.getElementById('1210.0637v1-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, 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">5 pages, 3 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1206.1928">arXiv:1206.1928</a> <span> [<a href="https://arxiv.org/pdf/1206.1928">pdf</a>, <a href="https://arxiv.org/ps/1206.1928">ps</a>, <a href="https://arxiv.org/format/1206.1928">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/10.1016/j.physletb.2013.01.014">10.1016/j.physletb.2013.01.014 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Single Spin Asymmetry $A_N$ in Polarized Proton-Proton Elastic Scattering at $\sqrt{s}=200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alakhverdyants%2C+A+V">A. V. Alakhverdyants</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E">E. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Betancourt%2C+M+J">M. J. Betancourt</a>, <a href="/search/nucl-ex?searchtype=author&query=Betts%2C+R+R">R. R. Betts</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a> , et al. (345 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="1206.1928v3-abstract-short" style="display: inline;"> We report a high precision measurement of the transverse single spin asymmetry $A_N$ at the center of mass energy $\sqrt{s}=200$ GeV in elastic proton-proton scattering by the STAR experiment at RHIC. The $A_N$ was measured in the four-momentum transfer squared $t$ range $0.003 \leqslant |t| \leqslant 0.035$ $\GeVcSq$, the region of a significant interference between the electromagnetic and hadron… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1206.1928v3-abstract-full').style.display = 'inline'; document.getElementById('1206.1928v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1206.1928v3-abstract-full" style="display: none;"> We report a high precision measurement of the transverse single spin asymmetry $A_N$ at the center of mass energy $\sqrt{s}=200$ GeV in elastic proton-proton scattering by the STAR experiment at RHIC. The $A_N$ was measured in the four-momentum transfer squared $t$ range $0.003 \leqslant |t| \leqslant 0.035$ $\GeVcSq$, the region of a significant interference between the electromagnetic and hadronic scattering amplitudes. The measured values of $A_N$ and its $t$-dependence are consistent with a vanishing hadronic spin-flip amplitude, thus providing strong constraints on the ratio of the single spin-flip to the non-flip amplitudes. Since the hadronic amplitude is dominated by the Pomeron amplitude at this $\sqrt{s}$, we conclude that this measurement addresses the question about the presence of a hadronic spin flip due to the Pomeron exchange in polarized proton-proton elastic scattering. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1206.1928v3-abstract-full').style.display = 'none'; document.getElementById('1206.1928v3-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> 29 January, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 June, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 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">12 pages, 6 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physics Letters B 719 (2013), pp. 62-69 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1205.6826">arXiv:1205.6826</a> <span> [<a href="https://arxiv.org/pdf/1205.6826">pdf</a>, <a href="https://arxiv.org/ps/1205.6826">ps</a>, <a href="https://arxiv.org/format/1205.6826">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.86.051101">10.1103/PhysRevD.86.051101 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Transverse Single-Spin Asymmetry and Cross-Section for pi0 and eta Mesons at Large Feynman-x in Polarized p+p Collisions at sqrt(s)=200 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=The+STAR+Collaboration"> The STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alakhverdyants%2C+A+V">A. V. Alakhverdyants</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anderson%2C+B+D">B. D. Anderson</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E">E. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Bannerjee%2C+A">A. Bannerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Betancourt%2C+M+J">M. J. Betancourt</a>, <a href="/search/nucl-ex?searchtype=author&query=Betts%2C+R+R">R. R. Betts</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a> , et al. (341 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="1205.6826v1-abstract-short" style="display: inline;"> Measurements of the differential cross-section and the transverse single-spin asymmetry, A_N, vs. x_F for pi0 and eta mesons are reported for 0.4 < x_F < 0.75 at an average pseudorapidity of 3.68. A data sample of approximately 6.3 pb^{-1} was analyzed, which was recorded during p+p collisions at sqrt{s} = 200 GeV by the STAR experiment at RHIC. The average transverse beam polarization was 56%. Th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1205.6826v1-abstract-full').style.display = 'inline'; document.getElementById('1205.6826v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1205.6826v1-abstract-full" style="display: none;"> Measurements of the differential cross-section and the transverse single-spin asymmetry, A_N, vs. x_F for pi0 and eta mesons are reported for 0.4 < x_F < 0.75 at an average pseudorapidity of 3.68. A data sample of approximately 6.3 pb^{-1} was analyzed, which was recorded during p+p collisions at sqrt{s} = 200 GeV by the STAR experiment at RHIC. The average transverse beam polarization was 56%. The cross-section for pi0 is consistent with a perturbative QCD prediction, and the eta/pi0 cross-section ratio agrees with previous mid-rapidity measurements. For 0.55 < x_F < 0.75, A_N for eta (0.210 +- 0.056) is 2.2 standard deviations larger than A_N for pi0 (0.081 +- 0.016). <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1205.6826v1-abstract-full').style.display = 'none'; document.getElementById('1205.6826v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 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">7 pages, 5 figures, Submitted to Phys. Rev. D R.C</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 86, 051101(R) (2012) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1205.2735">arXiv:1205.2735</a> <span> [<a href="https://arxiv.org/pdf/1205.2735">pdf</a>, <a href="https://arxiv.org/ps/1205.2735">ps</a>, <a href="https://arxiv.org/format/1205.2735">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Longitudinal and transverse spin asymmetries for inclusive jet production at mid-rapidity in polarized p+p collisions at sqrt{s}=200 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=The+STAR+Collaboration"> The STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alakhverdyants%2C+A+V">A. V. Alakhverdyants</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anderson%2C+B+D">B. D. Anderson</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E">E. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Betancourt%2C+M+J">M. J. Betancourt</a>, <a href="/search/nucl-ex?searchtype=author&query=Betts%2C+R+R">R. R. Betts</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a> , et al. (349 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="1205.2735v1-abstract-short" style="display: inline;"> We report STAR measurements of the longitudinal double-spin asymmetry A_LL, the transverse single-spin asymmetry A_N, and the transverse double-spin asymmetries A_Sigma and A_TT for inclusive jet production at mid-rapidity in polarized p+p collisions at a center-of-mass energy of sqrt{s} = 200 GeV. The data represent integrated luminosities of 7.6 /pb with longitudinal polarization and 1.8 /pb wit… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1205.2735v1-abstract-full').style.display = 'inline'; document.getElementById('1205.2735v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1205.2735v1-abstract-full" style="display: none;"> We report STAR measurements of the longitudinal double-spin asymmetry A_LL, the transverse single-spin asymmetry A_N, and the transverse double-spin asymmetries A_Sigma and A_TT for inclusive jet production at mid-rapidity in polarized p+p collisions at a center-of-mass energy of sqrt{s} = 200 GeV. The data represent integrated luminosities of 7.6 /pb with longitudinal polarization and 1.8 /pb with transverse polarization, with 50-55% beam polarization, and were recorded in 2005 and 2006. No evidence is found for the existence of statistically significant jet A_N, A_Sigma, or A_TT at mid-rapidity. Recent model calculations indicate the A_N results may provide new limits on the gluon Sivers distribution in the proton. The asymmetry A_LL significantly improves the knowledge of gluon polarization in the nucleon. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1205.2735v1-abstract-full').style.display = 'none'; document.getElementById('1205.2735v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 May, 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">18 pages, 16 figures, 8 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1204.4244">arXiv:1204.4244</a> <span> [<a href="https://arxiv.org/pdf/1204.4244">pdf</a>, <a href="https://arxiv.org/ps/1204.4244">ps</a>, <a href="https://arxiv.org/format/1204.4244">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.86.072013">10.1103/PhysRevD.86.072013 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurements of $D^{0}$ and $D^{*}$ Production in $p$ + $p$ Collisions at $\sqrt{s}$ = 200 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alakhverdyants%2C+A+V">A. V. Alakhverdyants</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anderson%2C+B+D">B. D. Anderson</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E">E. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Betancourt%2C+M+J">M. J. Betancourt</a>, <a href="/search/nucl-ex?searchtype=author&query=Betts%2C+R+R">R. R. Betts</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a> , et al. (348 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="1204.4244v3-abstract-short" style="display: inline;"> We report measurements of charmed-hadron ($D^{0}$, $D^{*}$) production cross sections at mid-rapidity in $p$ + $p$ collisions at a center-of-mass energy of 200 GeV by the STAR experiment. Charmed hadrons were reconstructed via the hadronic decays $D^{0}\rightarrow K^{-}蟺^{+}$, $D^{*+}\rightarrow D^{0}蟺^{+}\rightarrow K^{-}蟺^{+}蟺^{+}$ and their charge conjugates, covering the $p_T$ range of 0.6$-$2… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1204.4244v3-abstract-full').style.display = 'inline'; document.getElementById('1204.4244v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1204.4244v3-abstract-full" style="display: none;"> We report measurements of charmed-hadron ($D^{0}$, $D^{*}$) production cross sections at mid-rapidity in $p$ + $p$ collisions at a center-of-mass energy of 200 GeV by the STAR experiment. Charmed hadrons were reconstructed via the hadronic decays $D^{0}\rightarrow K^{-}蟺^{+}$, $D^{*+}\rightarrow D^{0}蟺^{+}\rightarrow K^{-}蟺^{+}蟺^{+}$ and their charge conjugates, covering the $p_T$ range of 0.6$-$2.0 GeV/$c$ and 2.0$-$6.0 GeV/$c$ for $D^{0}$ and $D^{*+}$, respectively. From this analysis, the charm-pair production cross section at mid-rapidity is $d蟽/dy|_{y=0}^{c\bar{c}}$ = 170 $\pm$ 45 (stat.) $^{+38}_{-59}$ (sys.) $渭$b. The extracted charm-pair cross section is compared to perturbative QCD calculations. The transverse momentum differential cross section is found to be consistent with the upper bound of a Fixed-Order Next-to-Leading Logarithm calculation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1204.4244v3-abstract-full').style.display = 'none'; document.getElementById('1204.4244v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 October, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 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">15 pages, 16 figures. Revised version submitted to Phys. Rev. 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/1204.1890">arXiv:1204.1890</a> <span> [<a href="https://arxiv.org/pdf/1204.1890">pdf</a>, <a href="https://arxiv.org/ps/1204.1890">ps</a>, <a href="https://arxiv.org/format/1204.1890">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.86.024906">10.1103/PhysRevC.86.024906 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Di-electron spectrum at mid-rapidity in $p+p$ collisions at $\sqrt{s} = 200$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alakhverdyants%2C+A+V">A. V. Alakhverdyants</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anderson%2C+B+D">B. D. Anderson</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E">E. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+A">A. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Betancourt%2C+M+J">M. J. Betancourt</a>, <a href="/search/nucl-ex?searchtype=author&query=Betts%2C+R+R">R. R. Betts</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a> , et al. (348 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="1204.1890v2-abstract-short" style="display: inline;"> We report on mid-rapidity mass spectrum of di-electrons and cross sections of pseudoscalar and vector mesons via $e^{+}e^{-}$ decays, from $\sqrt{s} = 200$ GeV $p+p$ collisions, measured by the large acceptance experiment STAR at RHIC. The ratio of the di-electron continuum to the combinatorial background is larger than 10% over the entire mass range. Simulations of di-electrons from light-meson d… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1204.1890v2-abstract-full').style.display = 'inline'; document.getElementById('1204.1890v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1204.1890v2-abstract-full" style="display: none;"> We report on mid-rapidity mass spectrum of di-electrons and cross sections of pseudoscalar and vector mesons via $e^{+}e^{-}$ decays, from $\sqrt{s} = 200$ GeV $p+p$ collisions, measured by the large acceptance experiment STAR at RHIC. The ratio of the di-electron continuum to the combinatorial background is larger than 10% over the entire mass range. Simulations of di-electrons from light-meson decays and heavy-flavor decays (charmonium and open charm correlation) are found to describe the data. The extracted $蠅\rightarrow e^{+}e^{-}$ invariant yields are consistent with previous measurements. The mid-rapidity yields ($dN/dy$) of $蠁$ and $J/蠄$ are extracted through their di-electron decay channels and are consistent with the previous measurements of $蠁\rightarrow K^{+}K^{-}$ and $J/蠄\rightarrow e^{+}e^{-}$. Our results suggest a new upper limit of the branching ratio of the $畏\rightarrow e^{+}e^{-}$ of $1.7\times10^{-5}$ at 90% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1204.1890v2-abstract-full').style.display = 'none'; document.getElementById('1204.1890v2-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, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 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">15 pages, 17 figures, 4 tables. Published</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, 024906 (2012) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1112.2980">arXiv:1112.2980</a> <span> [<a href="https://arxiv.org/pdf/1112.2980">pdf</a>, <a href="https://arxiv.org/format/1112.2980">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.85.092010">10.1103/PhysRevD.85.092010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the $W \to e 谓$ and $Z/纬^* \to e^+e^-$ Production Cross Sections at Mid-rapidity in Proton-Proton Collisions at $\sqrt{s}$ = 500 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alakhverdyants%2C+A+V">A. V. Alakhverdyants</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anderson%2C+B+D">B. D. Anderson</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee"> Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Betancourt%2C+M+J">M. J. Betancourt</a>, <a href="/search/nucl-ex?searchtype=author&query=Betts%2C+R+R">R. R. Betts</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordyuzhin%2C+I+G">I. G. Bordyuzhin</a> , et al. (326 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="1112.2980v1-abstract-short" style="display: inline;"> We report measurements of the charge-separated $W^{+(-)} \to e^{+(-)} + 谓_e(\bar谓_e)$ and $Z/纬^* \to e^+e^-$ production cross sections at mid-rapidity in proton-proton collisions at $\sqrt{s}$ = 500 GeV. These results are based on 13.2 pb$^{-1}$ of data recorded in 2009 by the STAR detector at RHIC. Production cross sections for W bosons that decay via the $e 谓$ channel were measured to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1112.2980v1-abstract-full').style.display = 'inline'; document.getElementById('1112.2980v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1112.2980v1-abstract-full" style="display: none;"> We report measurements of the charge-separated $W^{+(-)} \to e^{+(-)} + 谓_e(\bar谓_e)$ and $Z/纬^* \to e^+e^-$ production cross sections at mid-rapidity in proton-proton collisions at $\sqrt{s}$ = 500 GeV. These results are based on 13.2 pb$^{-1}$ of data recorded in 2009 by the STAR detector at RHIC. Production cross sections for W bosons that decay via the $e 谓$ channel were measured to be $蟽(pp \to W^+ X) \cdot BR(W^+ \to e^+ 谓_e)$ = 117.3 \pm 5.9(stat) \pm 6.2(syst) \pm 15.2(lumi) pb, and $蟽(pp \to W^- X) \cdot BR(W^- \to e^- \bar谓_e)$ = 43.3 \pm 4.6(stat) \pm 3.4(syst) \pm 5.6(lumi) pb. For $Z/纬^*$ production, $蟽(pp \to Z/纬^* X) \cdot BR(Z/纬^* \to e^+ e^-)$ = 7.7 \pm 2.1(stat) $^{+0.5}_{-0.9}$(syst) \pm 1.0(lumi) pb for di-lepton invariant masses $m_{e^+e^-}$ between 70 and 110 GeV/$c^2$. First measurements of the W cross section ratio, $蟽(pp \to W^+ X) / 蟽(pp \to W^- X)$, at $\sqrt{s}$ = 500 GeV are also reported. Theoretical predictions, calculated using recent parton distribution functions, are found to agree with the measured cross sections. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1112.2980v1-abstract-full').style.display = 'none'; document.getElementById('1112.2980v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 December, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">14 pages, 12 figures, 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/1111.5637">arXiv:1111.5637</a> <span> [<a href="https://arxiv.org/pdf/1111.5637">pdf</a>, <a href="https://arxiv.org/format/1111.5637">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.86.014904">10.1103/PhysRevC.86.014904 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Energy and system-size dependence of two- and four-particle $v_2$ measurements in heavy-ion collisions at RHIC and their implications on flow fluctuations and nonflow </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=The+STAR+Collaboration"> The STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alakhverdyants%2C+A+V">A. V. Alakhverdyants</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anderson%2C+B+D">B. D. Anderson</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnovska%2C+Z">Z. Barnovska</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Betancourt%2C+M+J">M. J. Betancourt</a>, <a href="/search/nucl-ex?searchtype=author&query=Betts%2C+R+R">R. R. Betts</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordyuzhin%2C+I+G">I. G. Bordyuzhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Borowski%2C+W">W. Borowski</a> , et al. (324 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="1111.5637v2-abstract-short" style="display: inline;"> We present STAR measurements of azimuthal anisotropy by means of the two- and four-particle cumulants $v_2$ ($v_2\{2\}$ and $v_2\{4\}$) for Au+Au and Cu+Cu collisions at center of mass energies $\sqrt{s_{_{\mathrm{NN}}}} = 62.4$ and 200 GeV. The difference between $v_2\{2\}^2$ and $v_2\{4\}^2$ is related to $v_{2}$ fluctuations ($蟽_{v_2}$) and nonflow $(未_{2})$. We present an upper limit to… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1111.5637v2-abstract-full').style.display = 'inline'; document.getElementById('1111.5637v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1111.5637v2-abstract-full" style="display: none;"> We present STAR measurements of azimuthal anisotropy by means of the two- and four-particle cumulants $v_2$ ($v_2\{2\}$ and $v_2\{4\}$) for Au+Au and Cu+Cu collisions at center of mass energies $\sqrt{s_{_{\mathrm{NN}}}} = 62.4$ and 200 GeV. The difference between $v_2\{2\}^2$ and $v_2\{4\}^2$ is related to $v_{2}$ fluctuations ($蟽_{v_2}$) and nonflow $(未_{2})$. We present an upper limit to $蟽_{v_2}/v_{2}$. Following the assumption that eccentricity fluctuations $蟽_蔚$ dominate $v_2$ fluctuations $\frac{蟽_{v_2}}{v_2} \approx \frac{蟽_蔚}蔚$ we deduce the nonflow implied for several models of eccentricity fluctuations that would be required for consistency with $v_2\{2\}$ and $v_2\{4\}$. We also present results on the ratio of $v_2$ to eccentricity. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1111.5637v2-abstract-full').style.display = 'none'; document.getElementById('1111.5637v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 December, 2011; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 November, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">15 pages, 12 Figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1110.5800">arXiv:1110.5800</a> <span> [<a href="https://arxiv.org/pdf/1110.5800">pdf</a>, <a href="https://arxiv.org/ps/1110.5800">ps</a>, <a href="https://arxiv.org/format/1110.5800">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.85.014903">10.1103/PhysRevC.85.014903 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> System size and energy dependence of near-side di-hadron correlations </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alakhverdyants%2C+A+V">A. V. Alakhverdyants</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anderson%2C+B+D">B. D. Anderson</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnby%2C+L+S">L. S. Barnby</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Betancourt%2C+M+J">M. J. Betancourt</a>, <a href="/search/nucl-ex?searchtype=author&query=Betts%2C+R+R">R. R. Betts</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a>, <a href="/search/nucl-ex?searchtype=author&query=Bombara%2C+M">M. Bombara</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordyuzhin%2C+I+G">I. G. Bordyuzhin</a> , et al. (333 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="1110.5800v1-abstract-short" style="display: inline;"> Two-particle azimuthal ($螖蠁$) and pseudorapidity ($螖畏$) correlations using a trigger particle with large transverse momentum ($p_T$) in $d$+Au, Cu+Cu and Au+Au collisions at $\sqrt{s_{NN}}$ =\xspace 62.4 GeV and 200~GeV from the STAR experiment at RHIC are presented. The \ns correlation is separated into a jet-like component, narrow in both $螖蠁$ and $螖畏$, and the ridge, narrow in $螖蠁$ but broad in… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1110.5800v1-abstract-full').style.display = 'inline'; document.getElementById('1110.5800v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1110.5800v1-abstract-full" style="display: none;"> Two-particle azimuthal ($螖蠁$) and pseudorapidity ($螖畏$) correlations using a trigger particle with large transverse momentum ($p_T$) in $d$+Au, Cu+Cu and Au+Au collisions at $\sqrt{s_{NN}}$ =\xspace 62.4 GeV and 200~GeV from the STAR experiment at RHIC are presented. The \ns correlation is separated into a jet-like component, narrow in both $螖蠁$ and $螖畏$, and the ridge, narrow in $螖蠁$ but broad in $螖畏$. Both components are studied as a function of collision centrality, and the jet-like correlation is studied as a function of the trigger and associated $p_T$. The behavior of the jet-like component is remarkably consistent for different collision systems, suggesting it is produced by fragmentation. The width of the jet-like correlation is found to increase with the system size. The ridge, previously observed in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV, is also found in Cu+Cu collisions and in collisions at $\sqrt{s_{NN}}$ =\xspace 62.4 GeV, but is found to be substantially smaller at $\sqrt{s_{NN}}$ =\xspace 62.4 GeV than at $\sqrt{s_{NN}}$ = 200 GeV for the same average number of participants ($ \langle N_{\mathrm{part}}\rangle$). Measurements of the ridge are compared to models. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1110.5800v1-abstract-full').style.display = 'none'; document.getElementById('1110.5800v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 October, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">17 pages, 14 figures, submitted to Phys. Rev. C</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1109.4380">arXiv:1109.4380</a> <span> [<a href="https://arxiv.org/pdf/1109.4380">pdf</a>, <a href="https://arxiv.org/ps/1109.4380">ps</a>, <a href="https://arxiv.org/format/1109.4380">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.86.064902">10.1103/PhysRevC.86.064902 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Anomalous centrality evolution of two-particle angular correlations from Au-Au collisions at $\sqrt{s_{\rm NN}}$ = 62 and 200 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Agakishiev%2C+G">G. Agakishiev</a>, <a href="/search/nucl-ex?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/nucl-ex?searchtype=author&query=Alakhverdyants%2C+A+V">A. V. Alakhverdyants</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+I">I. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alford%2C+J">J. Alford</a>, <a href="/search/nucl-ex?searchtype=author&query=Anderson%2C+B+D">B. D. Anderson</a>, <a href="/search/nucl-ex?searchtype=author&query=Anson%2C+C+D">C. D. Anson</a>, <a href="/search/nucl-ex?searchtype=author&query=Arkhipkin%2C+D">D. Arkhipkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Averichev%2C+G+S">G. S. Averichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Balewski%2C+J">J. Balewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Beavis%2C+D+R">D. R. Beavis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/nucl-ex?searchtype=author&query=Betancourt%2C+M+J">M. J. Betancourt</a>, <a href="/search/nucl-ex?searchtype=author&query=Betts%2C+R+R">R. R. Betts</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhati%2C+A+K">A. K. Bhati</a>, <a href="/search/nucl-ex?searchtype=author&query=Bichsel%2C+H">H. Bichsel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/nucl-ex?searchtype=author&query=Bland%2C+L+C">L. C. Bland</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordyuzhin%2C+I+G">I. G. Bordyuzhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Borowski%2C+W">W. Borowski</a>, <a href="/search/nucl-ex?searchtype=author&query=Bouchet%2C+J">J. Bouchet</a> , et al. (330 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="1109.4380v2-abstract-short" style="display: inline;"> We present two-dimensional (2D) two-particle angular correlations on relative pseudorapidity $畏$ and azimuth $蠁$ for charged particles from Au-Au collisions at $\sqrt{s_{\rm NN}} = 62$ and 200 GeV with transverse momentum $p_t \geq 0.15$ GeV/$c$, $|畏| \leq 1$ and $2蟺$ azimuth. Observed correlations include a {same-side} (relative azimuth $< 蟺/2$) 2D peak, a closely-related away-side azimuth dipole… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1109.4380v2-abstract-full').style.display = 'inline'; document.getElementById('1109.4380v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1109.4380v2-abstract-full" style="display: none;"> We present two-dimensional (2D) two-particle angular correlations on relative pseudorapidity $畏$ and azimuth $蠁$ for charged particles from Au-Au collisions at $\sqrt{s_{\rm NN}} = 62$ and 200 GeV with transverse momentum $p_t \geq 0.15$ GeV/$c$, $|畏| \leq 1$ and $2蟺$ azimuth. Observed correlations include a {same-side} (relative azimuth $< 蟺/2$) 2D peak, a closely-related away-side azimuth dipole, and an azimuth quadrupole conventionally associated with elliptic flow. The same-side 2D peak and away-side dipole are explained by semihard parton scattering and fragmentation (minijets) in proton-proton and peripheral nucleus-nucleus collisions. Those structures follow N-N binary-collision scaling in Au-Au collisions until mid-centrality where a transition to a qualitatively different centrality trend occurs within a small centrality interval. Above the transition point the number of same-side and away-side correlated pairs increases rapidly {relative to} binary-collision scaling, the $畏$ width of the same-side 2D peak also increases rapidly ($畏$ elongation) and the $蠁$ width actually decreases significantly. Those centrality trends are more remarkable when contrasted with expectations of jet quenching in a dense medium. Observed centrality trends are compared to {\sc hijing} predictions and to the expected trends for semihard parton scattering and fragmentation in a thermalized opaque medium. We are unable to reconcile a semihard parton scattering and fragmentation origin for the observed correlation structure and centrality trends with heavy ion collision scenarios which invoke rapid parton thermalization. On the other hand, if the collision system is effectively opaque to few-GeV partons the observations reported here would be inconsistent with a minijet picture. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1109.4380v2-abstract-full').style.display = 'none'; document.getElementById('1109.4380v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 June, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 September, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">26 pages, 8 figures, 2 tables</span> </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 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