Publication: Study of Drell-Yan dimuon production in proton-lead collisions at √sNN = 8.16 TeV
Дата
2021
Авторы
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Ambrogi, F.
Matveev, V.
Bychkova, O.
Chadeeva, M.
Philippov, D.
Popova, E.
Rusinov, V.
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Аннотация
© 2021, The Author(s).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 pT and of a geometric variable ϕ* are measured, where ϕ* highly correlates with pT 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. [Figure not available: see fulltext.]
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Study of Drell-Yan dimuon production in proton-lead collisions at √sNN = 8.16 TeV / Sirunyan, A.M. [et al.] // Journal of High Energy Physics. - 2021. - 2021. - № 5. - 10.1007/JHEP05(2021)182
URI
https://www.doi.org/10.1007/JHEP05(2021)182
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https://openrepository.mephi.ru/handle/123456789/24217
https://www.scopus.com/record/display.uri?eid=2-s2.0-85107870935&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000655672400001
https://openrepository.mephi.ru/handle/123456789/24217