Study of azimuthal anisotropy of Υ(1S) mesons in pPb collisions at √sNN = 8.16 TeV

Belyaev, A.; Boos, E.E.; Ershov, A.A.; Gribushin, A.; Kaminskiy, A.; Khein, L.; Kodolova, O.L.; Korotkikh, V.L.; Obraztsov, S.V.; Petrushanko, S.V.; Savrin, V.I.; Snigirev, A.M.; Vardanyan, I.; CMS, C.

Авторы: Belyaev Andrey, Boos E.E., Ershov A.A., Gribushin A., Kaminskiy A., Khein L., Kodolova O.L., Korotkikh V.L., Obraztsov S.V., Petrushanko S.V., Savrin V.I., Snigirev A.M., Vardanyan I., CMS Collaboration
Журнал: Physics Letters B
Том: 850
Год издания: 2024
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Номер статьи: 138518
DOI: 10.1016/j.physletb.2024.138518
Аннотация: The azimuthal anisotropy of Υ(1S) mesons in high-multiplicity proton-lead collisions is studied using data collected by the CMS experiment at a nucleon-nucleon center-of-mass energy of 8.16 TeV. The Υ(1S) mesons are reconstructed using their dimuon decay channel. The anisotropy is characterized by the second Fourier harmonic coefficients, found using a two-particle correlation technique, in which the Υ(1S) mesons are correlated with charged hadrons. A large pseudorapidity gap is used to suppress short-range correlations. Nonflow contamination from the dijet background is removed using a low-multiplicity subtraction method, and the results are presented as a function of Υ(1S) transverse momentum. The azimuthal anisotropies are smaller than those found for charmonia in proton-lead collisions at the same collision energy, but are consistent with values found for Υ(1S) mesons in lead-lead interactions at a nucleon-nucleon center-of-mass energy of 5.02 TeV.
Добавил в систему: Петрушанко Сергей Владимирович

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Study of azimuthal anisotropy of Υ(1S) mesons in pPb collisions at √sNN = 8.16 TeVстатья

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