Measurements of azimuthal anisotropy of nonprompt D 0 mesons in PbPb collisions at s NN=5.02TeV

CMS Collaboration

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Abstract

Measurements of the elliptic (v 2) and triangular (v 3) azimuthal anisotropy coefficients are presented for [Formula presented] mesons produced in [Formula presented] hadron decays (nonprompt [Formula presented] mesons) in lead-lead collisions at s NN=5.02TeV. The results are compared with previously published charm meson anisotropies measured using prompt [Formula presented] mesons. The data were collected with the CMS detector in 2018 with an integrated luminosity of 0.58nb −1. Azimuthal anisotropy is sensitive to the interactions of quarks with the hot and dense medium created in heavy ion collisions. Comparing results for prompt and nonprompt [Formula presented] mesons can assist in understanding the mass dependence of these interactions. The nonprompt results show lower magnitudes of v 2 and v 3 and weaker dependences on the meson transverse momentum and collision centrality than those found for prompt [Formula presented] mesons. The results are in agreement with theoretical predictions that include a mass dependence in the interactions of quarks with the medium.

Original languageEnglish
Article number138389
Number of pages25
JournalPhys. Lett. B
Volume850
Issue number2024
DOIs
Publication statusPublished - Mar 2024

Bibliographical note

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIN-21-003 (CMS Public Pages)

Keywords

  • nucl-ex
  • hep-ex

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