Speaker
Description
The interaction of heavy quarks with the quark-gluon plasma (QGP) significantly influences their azimuthal distribution and transverse momentum ($p_{\mathrm{T}}$) spectra. Consequently, azimuthal anisotropy coefficients ($v_n$) and nuclear modification factors ($R_{AA}$) of heavy flavor hadrons serve as essential observables for probing QGP properties. This talk presents the first measurements of the elliptic ($v_2$) and triangular ($v_3$) flow coefficients of $D_{s}^{\pm}$ mesons in lead-lead (PbPb) collisions at a center-of-mass energy of 5.02 TeV, recorded by the CMS experiment. These measurements are performed as a function of transverse momentum across various centrality classes, with significantly improved precision. The broad kinematic coverage and direct comparison with non-strange D mesons offer critical insights into different charm quark flow mechanisms. Moreover, the first-ever measurement of the $v_3$ coefficient for $D_{s}^{\pm}$ mesons enables the exploration of initial-state fluctuations. Additionally, spectra and nuclear modification factors ($R_{AA}$) for both prompt and non-prompt $D^{0}$ mesons in PbPb collisions will be presented, with comparisons to theoretical models.
| Field of contribution | Experiment |
|---|
