The second-order Fourier coefficients (v2) characterizing the azimuthal distributions of Υ(1S) and Υ(2S) mesons produced in PbPb collisions at √sNN = 5.02 TeV are studied. The Υ mesons are reconstructed in their dimuon decay channel, as measured by the CMS detector. The collected data set corresponds to an integrated luminosity of 1.7 nb−1. The scalar product method is used to extract the v2 coefficients of the azimuthal distributions. Results are reported for the rapidity range |y| < 2.4, in the transverse momentum interval 0 < pT < 50 GeV/c, and in three centrality ranges of 10–30%, 30–50% and 50–90%. In contrast to the J/ψ mesons, the measured v2 values for the Υ mesons are found to be consistent with zero.

Sirunyan A.M., Tumasyan A., Adam W., Ambrogi F., Bergauer T., Dragicevic M., et al. (2021). Measurement of the azimuthal anisotropy of Υ(1S) and Υ(2S) mesons in PbPb collisions at √sNN = 5.02 TeV. PHYSICS LETTERS. SECTION B, 819, 1-23 [10.1016/j.physletb.2021.136385].

Measurement of the azimuthal anisotropy of Υ(1S) and Υ(2S) mesons in PbPb collisions at √sNN = 5.02 TeV

Battilana C.;Bonacorsi D.;Borgonovi L.;Braibant-Giacomelli S.;Castro A.;Cuffiani M.;Fanfani A.;Fontanesi E.;Guiducci L.;Iemmi F.;Primavera F.;Rovelli T.;Siroli G. P.;
2021

Abstract

The second-order Fourier coefficients (v2) characterizing the azimuthal distributions of Υ(1S) and Υ(2S) mesons produced in PbPb collisions at √sNN = 5.02 TeV are studied. The Υ mesons are reconstructed in their dimuon decay channel, as measured by the CMS detector. The collected data set corresponds to an integrated luminosity of 1.7 nb−1. The scalar product method is used to extract the v2 coefficients of the azimuthal distributions. Results are reported for the rapidity range |y| < 2.4, in the transverse momentum interval 0 < pT < 50 GeV/c, and in three centrality ranges of 10–30%, 30–50% and 50–90%. In contrast to the J/ψ mesons, the measured v2 values for the Υ mesons are found to be consistent with zero.
2021
Sirunyan A.M., Tumasyan A., Adam W., Ambrogi F., Bergauer T., Dragicevic M., et al. (2021). Measurement of the azimuthal anisotropy of Υ(1S) and Υ(2S) mesons in PbPb collisions at √sNN = 5.02 TeV. PHYSICS LETTERS. SECTION B, 819, 1-23 [10.1016/j.physletb.2021.136385].
Sirunyan A.M.; Tumasyan A.; Adam W.; Ambrogi F.; Bergauer T.; Dragicevic M.; Ero J.; Escalante Del Valle A.; Flechl M.; Fruhwirth R.; Jeitler M.; Kram...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/853298
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