Publication
Title
Study of Drell-Yan dimuon production in proton-lead collisions at root s(NN )=8.16 TeV
Author
Institution/Organisation
CMS Collaboration
Abstract
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(T), and of a geometric variable phi* are measured, where phi* highly correlates with p(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.
Language
English
Source (journal)
Journal of high energy physics. - Bristol
Publication
Bristol : 2021
ISSN
1126-6708
1029-8479 [online]
DOI
10.1007/JHEP05(2021)182
Volume/pages
5 (2021) , 47 p.
Article Reference
182
ISI
000655672400001
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Project info
The CMS experiment at the Large Hadron Collider at CERN.
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identifier
Creation 28.06.2021
Last edited 02.10.2024
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