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Observation of prompt J/ψ meson elliptic flow in high-multiplicity pPb collisions at √s NN =8.16 TeV

Choudhury, S and Komaragiri, JR and Tiwari, PC (2019) Observation of prompt J/ψ meson elliptic flow in high-multiplicity pPb collisions at √s NN =8.16 TeV. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 791 . pp. 172-194.

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Official URL: https://dx.doi.org/10.1016/j.physletb.2019.02.018


A measurement of the elliptic flow (v 2 ) 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 s NN =8.16TeV. Prompt J/ψ mesons decaying into two muons are reconstructed in the rapidity region in the nucleon-nucleon center-of-mass frame (y cm ), corresponding to either −2.86<y cm <−1.86 or 0.94<y cm <1.94. The average v 2 result from the two rapidity ranges is reported over the transverse momentum (p T ) range from 0.2 to 10 GeV. Positive v 2 values are observed for the prompt J/ψ meson, as extracted from long-range two-particle correlations with charged hadrons, for 2<p T <8 GeV. The prompt J/ψ results are compared with previous CMS measurements of elliptic flow for open charm mesons (D 0 ) 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. © 2019 The Author(s)

Item Type: Journal Article
Additional Information: Copyright for this article belongs to Elsevier B.V.
Department/Centre: Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Depositing User: Francis Jayakanth
Date Deposited: 09 Apr 2019 06:36
Last Modified: 09 Apr 2019 06:36
URI: http://eprints.iisc.ac.in/id/eprint/62195

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