Publication: Measurements of the azimuthal anisotropy of prompt and nonprompt charmonia in PbPb collisions at √sNN=5.02 TeV
Loading...
Institution Authors
Journal Title
Journal ISSN
Volume Title
Type
Article
Access
info:eu-repo/semantics/openAccess
Attribution 4.0 International
Attribution 4.0 International
Publication Status
Published
Creative Commons license
Except where otherwised noted, this item's license is described as info:eu-repo/semantics/openAccess
Abstract
The second-order (v(2)) and third-order (v(3)) Fourier coefficients describing the azimuthal anisotropy of prompt and nonprompt (from b-hadron decays) J/psi, as well as prompt psi(2S) mesons are measured in lead-lead collisions at a center-of-mass energy per nucleon pair of root s(NN) = 5.02TeV. The analysis uses a data set corresponding to an integrated luminosity of 1.61 nb(-1) recorded with the CMS detector. The J/psi and psi(2S) mesons are reconstructed using their dimuon decay channel. The v(2) and v(3) coefficients are extracted using the scalar product method and studied as functions of meson transverse momentum and collision centrality. The measured v(2) values for prompt J/psi mesons are found to be larger than those for nonprompt J/psi mesons. The prompt J/psi v(2) values at high pT are found to be underpredicted by a model incorporating only parton energy loss effects in a quark-gluon plasma medium. Prompt and nonprompt J/psi meson v(3) and prompt psi(2S) v(2) and v(3) values are also reported for the first time, providing new information about heavy quark interactions in the hot and dense medium created in heavy ion collisions.
Date
2023-10-19
Publisher
Springer