Influence of strangeness on the anisotropic flow of prompt Ds± mesons in PbPb collisions at [b]sNN=5.02TeV

The azimuthal anisotropy of prompt D s ± mesons produced in lead-lead (PbPb) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeVis measured using data obtained with the CMS detector. The dataset corresponds to an integrated luminosity of 0.58 nb − 1 . The azimuthal anisotropy of heavy charmed mesons provides a key constraint on the interactions of charm quarks with the quark-gluon plasma (QGP) medium. These interactions include coalescence mechanisms and parton energy loss in the QGP. The anisotropy is characterized by measurements of the second- ( v 2 ) and third-order ( v 3 ) Fourier coefficients of the azimuthal distribution of the D s ± mesons. The v 2 coefficient is determined in the transverse momentum range 4 < p T < 40 GeV for three event centrality classes, while the v 3 coefficient is measured in the range 4 < p T < 20 GeV for a single event centrality class. The results for the D s ± mesons are compared to those previously measured for D 0 mesons. For their respective p T and centrality ranges, the v 2 and v 3 coefficients for D s ± and D 0 mesons are found to be consistent. This suggests that the strangeness content of the D s ± meson does not significantly alter its azimuthal distribution, at least within the measured p T ranges. Theoretical predictions incorporating heavy-quark transport and hadronization mechanisms in the QGP are compared to the measured anisotropy coefficients.