Momentum broadening of heavy quarks and jets in the Glasma from classical colored particle simulations

TL;DR

This paper studies how the early Glasma stage in heavy-ion collisions affects the momentum broadening of heavy quarks and jets, revealing anisotropic effects aligned with the beam axis through classical simulations.

Contribution

It introduces classical colored particle simulations to analyze momentum broadening in the Glasma, highlighting anisotropic effects and energy dependence.

Findings

Probes gain momentum on the order of the saturation scale Q_s.

The Glasma induces anisotropic momentum broadening, more along the beam axis.

Lower energy quark jets exhibit more pronounced anisotropy.

Abstract

We investigate the effects of the pre-equilibrium Glasma stage of heavy-ion collisions on the broadening of momentum for heavy quarks and jets using classical colored particle simulations based on Wong's equations. Confirming previous studies, we find that these probes accumulate momentum on the order of the saturation scale $Q_s$ and that the color field of the Glasma induces an anisotropy with more broadening along the beam axis. For quark jets the anisotropy is more pronounced at lower energies.