Regular Article - Theoretical Physics
QLBT: a linear Boltzmann transport model for heavy quarks in a quark-gluon plasma of quasi-particles
Institute of Particle Physics and Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal University, 430079, Wuhan, China
2 Institute of Frontier and Interdisciplinary Science, Shandong University, 266237, Qingdao, Shandong, China
3 Nuclear Science Division, Lawrence Berkeley National Laboratory, 94720, Berkeley, CA, USA
Accepted: 11 April 2022
Published online: 21 April 2022
We develop a new heavy quark transport model, QLBT, to simulate the dynamical propagation of heavy quarks inside the quark-gluon plasma (QGP) created in relativistic heavy-ion collisions. Our QLBT model is based on the linear Boltzmann transport (LBT) model with the ideal QGP replaced by a collection of quasi-particles to account for the non-perturbative interactions among quarks and gluons of the hot QGP. The thermal masses of quasi-particles are fitted to the equation of state from lattice QCD simulations using the Bayesian statistical analysis method. Combining QLBT with our advanced hybrid fragmentation-coalescence hadronization approach, we calculate the nuclear modification factor and the elliptic flow of D mesons at the Relativistic Heavy-Ion Collider and the Large Hadron Collider. By comparing our QLBT calculation to the experimental data on the D meson and , we extract the heavy quark transport parameter and diffusion coefficient in the temperature range of , and compare them with the lattice QCD results and other phenomenological studies.
© The Author(s) 2022
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