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19–23 Dec 2024
Swatantrata Bhavan, Banaras Hindu University, Varanasi
Asia/Kolkata timezone

Production and collective flow measurement of charm strange mesons in heavy ion collisions at 5.02 TeV with CMS experiment

Not scheduled
20m
Swatantrata Bhavan, Banaras Hindu University, Varanasi

Swatantrata Bhavan, Banaras Hindu University, Varanasi

Department of Physics, I.Sc., Banaras Hindu University, 221005 Varanasi, India
Oral Heavy ion and QCD

Speaker

Nihar Ranjan Saha (Indian Institute of Technology Madras (IN))

Description

The interaction of heavy quarks with the quark-gluon plasma (QGP) significantly influences their azimuthal distribution and transverse momentum (pT) spectra. Consequently, azimuthal anisotropy coefficients (vn) and nuclear modification factors (RAA) of heavy flavor hadrons serve as essential observables for probing QGP properties. This talk presents the first measurements of the elliptic (v2) and triangular (v3) flow coefficients of Ds± 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 v3 coefficient for Ds± mesons enables the exploration of initial-state fluctuations. Additionally, spectra and nuclear modification factors (RAA) for both prompt and non-prompt D0 mesons in PbPb collisions will be presented, with comparisons to theoretical models.

Field of contribution Experiment

Author

Nihar Ranjan Saha (Indian Institute of Technology Madras (IN))

Presentation materials