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HK: Fachverband Physik der Hadronen und Kerne

HK 32: Heavy-Ion Collisions and QCD Phases VI

HK 32.5: Talk

Tuesday, March 12, 2024, 18:45–19:00, HBR 62: EG 03

Charm quark thermalization in the quark gluon plasma at RHIC — •Rossana Facen for the ALICE Germany collaboration — Physikalisches Institut Universität Heidelberg

Hadrons containing heavy quarks, i.e. charm or beauty, are unique probes to study the properties of the hot and dense QCD medium produced in heavy-ion collisions, the quark-gluon plasma (QGP). Due to their large masses, heavy quarks are produced at the initial stage of the collision, almost exclusively via hard partonic scattering processes. Therefore, they experience the full collision history propagating through the QCD medium and interacting with its constituents. These interactions may lead heavy quarks to thermalize within the QGP. While various evidences supporting the thermalization of charm quarks at the LHC have been collected in recent years, the thermalization process highly depends on the colliding system and energy. In this study we focus on the possible thermalization of charm quarks at RHIC in Au-Au collisions at a center-of-mass energy of √sNN = 200 GeV. The local thermalization of charm quarks is examined using a fluid-dynamic approach, describing charm quarks as part of the QGP medium itself. The output of our analysis is then compared to the available experimental results of STAR collaboration. This work is funded via the DFG ISOQUANT Collaborative Research Center (SFB 1225).

Keywords: Charm Quark; Thermalization; RHIC

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