We develop a new heavy quark transport model, QLBT, to simulate the dynamical propagation of heavy quarks inside the quarkgluon plasma (QGP) created in relativistic heavyion collisions. Our QLBT model is based on the linear Boltzmann transport (LBT) model with the ideal QGP replaced by a collection of quasiparticles to account for the nonperturbative interactions among quarks and gluons of the hot QGP. The thermal masses of quasiparticles are fitted to the equation of state from lattice QCD simulations using the Bayesian statistical analysis method. Combining QLBT with our advanced hybrid fragmentationcoalescence hadronization approach, we calculate the nuclear modification factor
Datadriven extraction of heavy quark diffusion in quarkgluon plasma
Abstract Heavy quark production provides a unique probe of the quarkgluon plasma transport properties in heavy ion collisions. Experimental observables like the nuclear modification factor $$R_\mathrm{AA}$$ R AA and elliptic anisotropy $$v_\mathrm{2}$$ v 2 of heavy flavor mesons are sensitive to the heavy quark diffusion coefficient. There now exist an extensive set of such measurements, which allow a datadriven extraction of this coefficient. In this work, we make such an attempt within our recently developed heavy quark transport modeling framework (Langevintransport with Gluon Radiation, LGR). A question of particular interest is the temperature dependence of the diffusion coefficient, for which we test a wide range of possibility and draw constraints by comparing relevant charm meson data with model results. We find that a relatively strong increase of diffusion coefficient from crossover temperature $$T_c$$ T c toward high temperature is preferred by data. We also make predictions for Bottom meson observables for further experimental tests.
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 Award ID(s):
 1913729
 NSFPAR ID:
 10217447
 Date Published:
 Journal Name:
 The European Physical Journal C
 Volume:
 80
 Issue:
 7
 ISSN:
 14346044
 Format(s):
 Medium: X
 Sponsoring Org:
 National Science Foundation
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QLBT: a linear Boltzmann transport model for heavy quarks in a quarkgluon plasma of quasiparticles
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