Prompt and non-prompt <i>J</i>/<i>ψ</i> elliptic flow in Pb plus Pb collisions at √<i>S</i><sub>NN</sub>=5.02 TeV with the ATLAS detector



Aaboud, M, Aad, G, Abbott, B, Abdinov, O, Abeloos, B, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2901 more authors) (2018) Prompt and non-prompt <i>J</i>/<i>ψ</i> elliptic flow in Pb plus Pb collisions at √<i>S</i><sub>NN</sub>=5.02 TeV with the ATLAS detector. EUROPEAN PHYSICAL JOURNAL C, 78 (9). 784-.

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Abstract

The elliptic flow of prompt and non-prompt J / ψ was measured in the dimuon decay channel in Pb+Pb collisions at s NN = 5.02   TeV with an integrated luminosity of 0.42 nb - 1 with the ATLAS detector at the LHC. The prompt and non-prompt signals are separated using a two-dimensional simultaneous fit of the invariant mass and pseudo-proper decay time of the dimuon system from the J / ψ decay. The measurement is performed in the kinematic range of dimuon transverse momentum and rapidity 9 < p T < 30   GeV , | y | < 2 , and 0-60% collision centrality. The elliptic flow coefficient, v 2 , is evaluated relative to the event plane and the results are presented as a function of transverse momentum, rapidity and centrality. It is found that prompt and non-prompt J / ψ mesons have non-zero elliptic flow. Prompt J / ψ v 2 decreases as a function of p T , while for non-prompt J / ψ it is, with limited statistical significance, consistent with a flat behaviour over the studied kinematic region. There is no observed dependence on rapidity or centrality.

Item Type: Article
Additional Information: 34 pages in total, author list starting page 18, 7 figures, 2 tables, Eur. Phys. J. C 78 (2018) 784. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2017-05
Uncontrolled Keywords: ATLAS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 02 Aug 2019 10:21
Last Modified: 09 Feb 2024 08:57
DOI: 10.1140/epjc/s10052-018-6243-9
Open Access URL: https://link.springer.com/content/pdf/10.1140/epjc...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3043675

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