Constituent mass dependence of transport coefficients in a quark-gluon plasma

TL;DR

This paper investigates how the masses of constituents in a quark-gluon plasma influence jet transport coefficients, revealing their ratio's sensitivity to mass and suggesting experimental measurements could shed light on plasma properties.

Contribution

It introduces a study of the dependence of jet transport coefficients on constituent mass in a quark-gluon plasma using a parton cascade model.

Findings

The ratio of transport coefficients is sensitive to plasma constituent mass.

Transport coefficients vary significantly with strong coupling and parton mass.

Experimental measurements could reveal plasma constituent properties.

Abstract

The transverse and longitudinal transport coefficients for jets in a quark-gluon plasma, $\hat{q}$ and $\hat{e}$, are extracted from simulations of the VNI/BMS parton cascade model. We study their variation under the strong coupling and the parton mass in the medium. We show that their ratio is sensitive to the mass of the plasma constituents. Experimental measurements of both quantities could provide new insights into the nature of the quark-gluon plasma as seen by hard probes.