在核子-核子质心能量为8.16 TeV的质子-铅（pPb）碰撞中测量了Drell-Yan过程的微分截面，包括Z玻色子的产生.使用在LHC上用CMS探测器记录的数据样本，对应于173 nb $^{-1}$的积分亮度。在15-600 GeV的范围内测量了微分截面与双μ子质量的函数关系，这在质子-核碰撞中尚属首次。还报道了在15-60 GeV和60-120 GeV的质量范围内，它是双μ子快度的函数，并建立了p-去Pb-去束方向的比率。在这两个质量范围内，微分截面作为双μ子横动量$p_\mathrm{T}$和几何变量$ϕ^*$的函数进行测量，其中$ϕ^*$与$p_\mathrm{T}$高度相关，但具有更高的精度。在Z质量区域，数据的快度依赖性表明与质子情况相比，铅核内部分子分布的修改。这些数据比基于当前部分子分布模型的预测更精确。
英文摘要：
Differential cross sections for the Drell-Yan process, including Z boson production, using the dimuon decay channel are measured in proton-lead (pPb) collisions at a nucleon-nucleon centre-of-mass energy of 8.16 TeV. A data sample recorded with the CMS detector at the LHC is used, corresponding to an integrated luminosity of 173 nb$^{-1}$. The differential cross section as a function of the dimuon mass is measured in the range 15-600 GeV, for the first time in proton-nucleus collisions. It is also reported as a function of dimuon rapidity over the mass ranges 15-60 GeV and 60-120 GeV, and ratios for the p-going over the Pb-going beam directions are built. In both mass ranges, the differential cross sections as functions of the dimuon transverse momentum $p_\mathrm{T}$ and of a geometric variable $ϕ^*$ are measured, where $ϕ^*$ highly correlates with $p_\mathrm{T}$ but is determined with higher precision. In the Z mass region, the rapidity dependence of the data indicate a modification of the distribution of partons within a lead nucleus as compared to the proton case. The data are more precise than predictions based upon current models of parton distributions.
Measurements of Angular Distributions of Drell-Yan Dimuons in $p+p$ and $p+d$ Interactions at 120 GeV/$c$
The University of Memphis（孟菲斯大学）；Los Alamos National Laboratory（洛斯阿拉莫斯国家实验室）；Academia Sinica（中央研究院）；Tokyo Institute of Technology（东京工业大学）；New Mexico State University（新墨西哥州立大学）；University of Virginia（弗吉尼亚大学）；RIKEN Nishina Center for Accelerator-Based Science（理化学研究所仁科加速器科学中心）；University of Michigan（密歇根大学）；Argonne National Laboratory（阿贡国家实验室）；Abilene Christian University（阿比林基督教大学）；University of Illinois at Urbana-Champaign（伊利诺伊大学厄巴纳-香槟分校）；Fermi National Accelerator Laboratory（费米国家加速器实验室）；Mississippi State University（密西西比州立大学）；Rutgers, The State University of New Jersey（罗格斯大学）；National Kaohsiung Normal University（国立高雄师范大学）；University of Colorado（科罗拉多大学）；Yamagata University（山形大学）；University of Maryland（马里兰大学）；High Energy Accelerator Research Organization（高能加速器研究机构）
Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 7 TeV
本文测量了sqrt（s）= 7 TeV pp碰撞中Drell-Yan轻子对的前后不对称性（A[FB]）。用CMS检测器收集的数据样本对应于5个逆毫微微光垒的积分亮度。测量的不对称性作为双轻子质量和双电子和双μ子通道中的快度的函数。还介绍了两个通道的组合结果。在双μ子通道中的A[FB]测量和两个通道的组合是在强子对撞机上获得的第一个这样的结果。测量的不对称性与标准模型的预测是一致的。
A scheme for fast exploratory simulation of azimuthal asymmetries in Drell-Yan experiments at intermediate energies. The DY_AB Monte Carlo event generator
