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Observation of prompt J/ψ meson elliptic flow in high-multiplicity pPb collisions at √sNN = 8.16 TeV
Sirunyan, A.M. Sanders, Stephen J. The CMS Collaboration
Sirunyan, A.M.
Sanders, Stephen J.
The CMS Collaboration
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Abstract
A measurement of the elliptic flow (v2) of prompt J/ψ mesons in high-multiplicity pPb collisions is reported using data collected by the CMS experiment at a nucleon-nucleon center-of-mass energy √sNN = 8.16 TeV. Prompt J/ψ mesons decaying into two muons are reconstructed in the rapidity region in the nucleon-nucleon center-of-mass frame (ycm), corresponding to either −2.86 < ycm < −1.86 or 0.94 < ycm < 1.94. The average v2 result from the two rapidity ranges is reported over the transverse momentum (pT) range from 0.2 to 10 GeV. Positive v2 values are observed for the prompt J/ψ meson, as extracted from long-range two-particle correlations with charged hadrons, for 2 < pT < 8 GeV. The prompt J/ψ results are compared with previous CMS measurements of elliptic flow for open charm mesons (D0) and strange hadrons. From these measurements, constraints can be obtained on the collective dynamics of charm quarks produced in high multiplicity events arising from small systems.
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This work is licensed under a Creative Commons Attribution 4.0 International License.
Date
2019-04-10
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Elsevier
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Keywords
CMS, Heavy-ion physics, Correlation, Flow, pPb, Heavy flavor
Citation
A.M. Sirunyan et al., "Observation of prompt J/ψ meson elliptic flow in high-multiplicity pPb collisions at sNN=8.16 TeV", Physics Letters B, Volume 791, 2019, Pages 172-194, ISSN 0370-2693, https://doi.org/10.1016/j.physletb.2019.02.018.
(http://www.sciencedirect.com/science/article/pii/S0370269319301133)