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

The CMS Collaboration, E-mail address: cms-publication-committee-chair@cern.ch

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

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=8.16TeV. 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.

Original languageEnglish (US)
Pages (from-to)172-194
Number of pages23
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume791
DOIs
StatePublished - Apr 10 2019

Keywords

  • CMS
  • Correlation
  • Flow
  • Heavy flavor
  • Heavy-ion physics
  • pPb

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint

Dive into the research topics of 'Observation of prompt J/ψ meson elliptic flow in high-multiplicity pPb collisions at √s<sub>NN</sub>=8.16 TeV'. Together they form a unique fingerprint.

Cite this