Gluon radiation by heavy quarks at intermediate energies and consequences for the mass hierarchy of energy loss

TL;DR

This paper extends gluon radiation calculations to finite mass heavy quarks, analyzing the dead cone effect and mass hierarchy in energy loss, with implications for heavy ion collision experiments.

Contribution

It introduces a finite mass extension of the Gunion Bertsch calculation, providing new insights into heavy quark energy loss mechanisms.

Findings

Dead cone effect influences gluon radiation patterns.

Mass hierarchy affects collisional and radiative energy loss.

Predictions for observables in heavy ion collisions.

Abstract

We extend the Gunion Bertsch calculation of gluon radiation in single scattering to the case of finite mass quarks. This case applies to the radiative energy-loss of heavy quarks of intermediate energies propagating in a quark gluon plasma. We discuss more specifically the dead cone effect as well as the mass hierarchy of the collisional and radiative energy loss and provide some predictions for observables sensitive to the mass hierarchy of energy loss in ultrarelativistic heavy ion collisions.