Linearized Boltzmann transport model for jet propagation in the quark-gluon plasma: Heavy quark evolution

TL;DR

This paper develops a Linearized Boltzmann Transport model coupled with hydrodynamics to simulate heavy quark evolution in quark-gluon plasma, successfully describing experimental observations of D meson suppression and flow.

Contribution

It extends the LBT model to include elastic and inelastic processes for heavy quarks and introduces a hybrid hadronization model, advancing the understanding of heavy flavor dynamics in QGP.

Findings

Good agreement with LHC and RHIC data on D meson suppression and flow.

Provides predictions for Pb-Pb collisions at 5.02 TeV.

Analyzes the impact of energy loss and hadronization mechanisms.

Abstract

A Linearized Boltzmann Transport (LBT) model coupled with hydrodynamical background is established to describe the evolution of jet shower partons and medium excitations in high energy heavy-ion collisions. We extend the LBT model to include both elastic and inelastic processes for light and heavy partons in the quark-gluon plasma. A hybrid model of fragmentation and coalescence is developed for the hadronization of heavy quarks. Within this framework, we investigate how heavy flavor observables depend on various ingredients, such as different energy loss and hadronization mechanisms, the momentum and temperature dependences of the transport coefficients, and the radial flow of the expanding fireball. Our model calculations show good descriptions of the $D$ meson suppression and elliptic flow observed at the LHC and RHIC. The prediction for the Pb-Pb collisions at $\sqrt{s_\mathrm{NN}}$=5.02~TeV is provided.