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http://earchive.tpu.ru/handle/11683/74925
Название: | Study of Drell-Yan dimuon production in proton-lead collisions at √sNN = 8.16 TeV |
Авторы: | Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Babaev, Anton Anatoljevich Yuzhakov, Aleksandr Dmitrievich Okhotnikov, Vitaly Vladimirovich Sukhikh, Leonid Grigorievich |
Ключевые слова: | Hadron-Hadron scattering (experiments); Relativistic heavy ion physics |
Дата публикации: | 2021 |
Издатель: | Springer Science+Business Media LLC. |
Библиографическое описание: | Study of Drell-Yan dimuon production in proton-lead collisions at √sNN = 8.16 TeV / A. M. Sirunyan, A. R. Tumasyan, W. Adam [et al.] // Journal of High Energy Physics. — 2021. — Vol. 2021, iss. 5. — [182, 46 p.]. |
Аннотация: | 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. |
URI: | http://earchive.tpu.ru/handle/11683/74925 |
Располагается в коллекциях: | Репринты научных публикаций |
Файлы этого ресурса:
Файл | Описание | Размер | Формат | |
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reprint-nw-39852.pdf | 838,87 kB | Adobe PDF | Просмотреть/Открыть |
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