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arXiv 1507.06232hep-exnucl-ex
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用ATLAS探测器测量的在$\sqrt{s_{NN}}=5.02$ TeV的PDMATHAAB Pb碰撞中$Z$玻色子的产生

$Z$ boson production in $p+$Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV measured with the ATLAS detector

ATLAS Collaboration

备注：
20 pages plus author list (36 pages total), 9 figures, 3 tables, published version, all figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2013-09/
发表信息：
Phys. Rev. C 92, 044915 (2015)
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摘要：

ATLAS协作组在大型强子对撞机上以$\sqrt{s_{NN}}=5.02$ TeV的能量测量了$Z$玻色子在$p+$ Pb碰撞中通过衰变成电子和μ子对的包容性生产。使用分别对应于$Z \rightarrow ee$和$Z \rightarrow μμ$的29.4 nb $^{-1}$和28.1 nb $^{-1}$的积分光度的数据进行测量。两个通道的结果是一致的，合并后得到的截面乘以$Z \rightarrow \ell\ell$分支比，在快度区$|y^{*}_{Z}|<3.5$上积分，为139.8 $\pm$ 4.8（统计）。$\pm$ 6.2（系统）$\pm$ 3.8（流明）NB.微分截面作为$Z$玻色子快度和横向动量的函数，并与基于部分子分布的模型进行比较，有和没有核修正。在一个标准的Glauber模型的框架内测量和分析的$p+$铅碰撞中的$Z$玻色子生产的中心依赖性的基础核子-核子散射截面的波动模型的扩展。

英文摘要：

The ATLAS Collaboration has measured the inclusive production of $Z$ bosons via their decays into electron and muon pairs in $p+$Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV at the Large Hadron Collider. The measurements are made using data corresponding to integrated luminosities of 29.4 nb$^{-1}$ and 28.1 nb$^{-1}$ for $Z \rightarrow ee$ and $Z \rightarrow μμ$, respectively. The results from the two channels are consistent and combined to obtain a cross section times the $Z \rightarrow \ell\ell$ branching ratio, integrated over the rapidity region $|y^{*}_{Z}|<3.5$, of 139.8 $\pm$ 4.8 (stat.) $\pm$ 6.2 (syst.) $\pm$ 3.8 (lumi.) nb. Differential cross sections are presented as functions of the $Z$ boson rapidity and transverse momentum, and compared with models based on parton distributions both with and without nuclear corrections. The centrality dependence of $Z$ boson production in $p+$Pb collisions is measured and analyzed within the framework of a standard Glauber model and the model's extension for fluctuations of the underlying nucleon-nucleon scattering cross section.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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