The quark-gluon plasma (QGP) profoundly shapes the behavior of heavy quarks, leaving an imprint on their azimuthal distribution and transverse momentum ( \(\textrm{p}_\textrm{T}\)  ) 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 measurements of the elliptic ( \(v_2\) ) and triangular ( \(v_3\) ) flow coefficients of prompt and non-prompt \(\textrm{D}^0\) mesons in lead-lead (PbPb) collisions at 5.02 TeV, recorded by the CMS experiment. These measurements are performed as a function of \(\textrm{p}_\textrm{T}\)   across various centrality classes. The prompt \(\textrm{D}^0\) meson flow serves as a direct window into charm quark behavior, while the non-prompt \(\textrm{D}^0\) meson, originating from B-hadron decay, unveils the enigmatic flow patterns of B-quarks within the QGP medium. Additionally, comparison with theoretical models provides critical validation of the underlying physics mechanisms governing these processes.

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Azimuthal Anisotropy of Charm Strange Mesons in Heavy Ion Collisions at CMS

  • Nihar Ranjan Saha

摘要

The quark-gluon plasma (QGP) profoundly shapes the behavior of heavy quarks, leaving an imprint on their azimuthal distribution and transverse momentum ( \(\textrm{p}_\textrm{T}\)  ) 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 measurements of the elliptic ( \(v_2\) ) and triangular ( \(v_3\) ) flow coefficients of prompt and non-prompt \(\textrm{D}^0\) mesons in lead-lead (PbPb) collisions at 5.02 TeV, recorded by the CMS experiment. These measurements are performed as a function of \(\textrm{p}_\textrm{T}\)   across various centrality classes. The prompt \(\textrm{D}^0\) meson flow serves as a direct window into charm quark behavior, while the non-prompt \(\textrm{D}^0\) meson, originating from B-hadron decay, unveils the enigmatic flow patterns of B-quarks within the QGP medium. Additionally, comparison with theoretical models provides critical validation of the underlying physics mechanisms governing these processes.