%0 Generic
%A Capellino, Federica
%C Heidelberg
%D 2024
%F heidok:34858
%K Heavy quarks
%R 10.11588/heidok.00034858
%T Fluid-dynamic description of heavy quarks in the quark-gluon plasma
%U https://archiv.ub.uni-heidelberg.de/volltextserver/34858/
%X Heavy quarks (i.e. charm and beauty) are powerful tools to characterize the quark-gluon  plasma (QGP) produced in heavy-ion collisions. Although they are initially produced out of  kinetic equilibrium via hard partonic scattering processes, recent measurements of anisotropic  flow of charmed hadrons pose the question regarding the possible thermalization of heavy  quarks in the medium. In this work, we provide new insights into the level of thermalization of  charm and beauty quarks in the QGP. In particular, exploiting a mapping between transport  theory and fluid dynamics, we show how a fluid-dynamic description of charm diffusion in the  QCD plasma is feasible. Inspired by recent Lattice-QCD calculations, we show that fluid  dynamics seems to be applicable also for beauty quarks in the latest stages of the expanding  QGP. We present results for transverse momentum distribution and integrated yields of  charmed hadrons in central Pb–Pb collisions at \sqrt{{\rm s_NN}} = 5.02 TeV at the LHC obtained with a  fluid-dynamic code coupled with the conservation of a heavy-quark – antiquark current in the  QGP. Our calculations are in agreement with the available experimental measurements in the  low transverse momentum region, indicating an effective hydrodynamization of charm quarks in  the QGP.