Measurement of W and Z boson production in 5 TeV pp, p plus Pb and Pb plus Pb collisions with the ATLAS detector

被引：0

作者：

Janus, P. ^{[1
]}

机构：

[1] AGH Univ Sci & Technol, Krakow, Poland

来源：

3RD INTERNATIONAL CONFERENCE ON PARTICLE PHYSICS AND ASTROPHYSICS (ICPPA) | 2018年

关键词：

D O I：

10.18502/ken.v3i1.1765

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

W and Z bosons are short lived and do not interact strongly. Thus their production yields measured via lepton decay channels in lead-lead with respect to proton-proton collisions provide direct tests of both binary collision scaling and possible modification of parton distribution functions (nPDF) due to nuclear effects. Further, the proton-lead collisions provide an excellent opportunity to study nPDFs in detail. The ATLAS detector has a broad acceptance in the muon and electron channels, with excellent performance even in the high occupancy environment of central heavy-ion collisions. ATLAS has recorded 0.49 nb(-1) of lead-lead data at the new center-of-mass energy of 5.02 TeV. Sizes of weak boson production samples are expected to increase by a factor of eight relative to the available Run 1 data at 2.76 TeV. In addition the data can be compared directly to the 29 nb(-1) of proton-lead data collected in Run 1 at the same energy. In this report, W and Z boson production yields, and lepton charge asymmetries from W decays are presented differentially in rapidity and transverse momentum as a function of centrality in lead-lead and proton-lead collisions.

引用

页码：345 / 351

页数：7

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