Anisotropy effects on heavy quark dynamics in Gribov modified gluon plasma

TL;DR

This paper investigates how anisotropic momentum distributions and nonperturbative effects influence heavy quark transport properties in the quark-gluon plasma, using a Gribov resummation approach within the Fokker-Planck framework.

Contribution

It introduces a nonperturbative method to study anisotropic effects on heavy quark dynamics, emphasizing angular dependence and momentum anisotropy in transport coefficients.

Findings

Momentum anisotropy significantly affects heavy quark transport coefficients.

Nonperturbative effects alter the energy loss and nuclear modification factor.

Angular dependence plays a crucial role in heavy quark dynamics.

Abstract

In the early stages of relativistic heavy-ion collisions, the momentum distribution of the quark-gluon plasma is anisotropic, leading to instabilities in the system due to chromomagnetic plasma modes. In this work, we consider the anisotropic momentum distribution of the medium constituents to investigate its effects on heavy quark dynamics using the nonperturbative Gribov resummation approach within the framework of the Fokker-Planck equation. Specifically, we study the influence of nonperturbative effects and weak anisotropies on the heavy quark transport coefficients, taking into account the angular dependence between the anisotropy vector and the direction of heavy quark motion. Furthermore, the calculated drag and diffusion coefficients are employed to estimate the energy loss of heavy quarks and the nuclear modification factor, incorporating both elastic collisions and inelastic processes. Our findings indicate that momentum anisotropy, angular dependence, and nonperturbative effects-captured through the scattering amplitudes-play a significant role in determining the transport properties of heavy quarks.