W and Z boson production in 5.02 TeV pp and p plus Pb collisions with the ATLAS detector

被引：0
作者：
Dumancic, Mirta [1 ]
机构：
[1] Weizmann Inst Sci, Dept Particle Phys & Astrophys, Rehovot, Israel
来源：
NUCLEAR AND PARTICLE PHYSICS PROCEEDINGS | 2017年 / 289卷
基金：
以色列科学基金会;
关键词：
ATLAS; heavy ion; W boson; Z boson; nPDF; centrality;
D O I：
10.1016/j.nuclphysbps.2017.05.042
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
This proceeding reports the ATLAS results of measuring vector boson production in pp and p+Pb collisions at the center-of-mass energy of 5.02 TeV per nucleon. Z bosons are reconstructed via leptonic decays and results are presented as a function of Z-boson rapidity. W bosons are identified by measuring leptons coming from W decays and the results are presented as a function of lepton pseudorapidity. In pp collisions Z boson cross section in vertical bar yz vertical bar < 2.5 is 590 +/- 9 (stat.) +/- 12 (syst.) +/- 32 (lumi.) pb. In p+Pb system kinematic distributions of W and Z bosons are compared to models based on NLO and NNLO QCD calculations using different PDF sets. Using PDF modification shows better agreement of the model and the data. Measurements done in different centrality intervals show that the PDF modification in p+Pb may have centrality dependence.
引用
收藏
页码：193 / 196
页数：4
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