SMuK 2021 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 12: Heavy-Ion Collisions and QCD Phases II
HK 12.4: Vortrag
Dienstag, 31. August 2021, 17:30–17:45, H1
Heavy-quark diffusion current in the Quark-Gluon Plasma — •Federica Capellino1,2, Andrea Dubla2, Stefan Floerchinger3, Eduardo Grossi4, Silvia Masciocchi1,2, Jan M. Pawlowski3, Ilya Selyuzhenkov2, and Johanna Stachel1 — 1Physikalisches Institut Heidelberg, Universität Heidelberg, 69120 Heidelberg, Germany — 2GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany — 3Institut für Theoretische Physik, Universität Heidelberg, 69120 Heidelberg, Germany — 4Center for Nuclear Theory, Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
A hydrodynamic approach to the transport of heavy quarks in the Quark-Gluon Plasma is presented. We exploit the conservation of the number of heavy quark - antiquark pairs within the evolution of the plasma to construct causal second-order hydrodynamic equations of motion. The hydrodynamic transport coefficients associated to the heavy-quark diffusion current are then compared with the momentum-diffusion coefficients obtained in the standard Fokker-Planck formalism. The purpose of the present work is to provide further insights on the level of thermalization of charm and bottom quarks inside the expanding Quark-Gluon Plasma by investigating the relation between the two approaches and determining if their merging is able to capture the complexity of the heavy-quark in-medium dynamics. This work is funded via the DFG ISOQUANT Collaborative Research Center (SFB 1225).