Investigating jet quenching on the lattice

TL;DR

This paper explores how lattice QCD simulations can be used to extract information about jet quenching, specifically the momentum broadening of a hard parton in quark-gluon plasma, through gauge-invariant operators.

Contribution

It demonstrates a non-perturbative lattice approach to estimate the jet quenching parameter, building on Caron-Huot's idea.

Findings

Estimated the jet quenching parameter non-perturbatively from lattice data

Showed how to extract momentum broadening information from gauge-invariant operators

Provided a new method to study jet quenching phenomena on the lattice

Abstract

Due to the dynamical, real-time, nature of the phenomenon, the study of jet quenching via lattice QCD simulations is not straightforward. In this contribution, however, we show how one can extract information about the momentum broadening of a hard parton moving in the quark-gluon plasma, from lattice calculations. After discussing the basic idea (originally proposed by Caron-Huot), we present a recent study, in which we estimated the jet quenching parameter non-perturbatively, from the lattice evaluation of a particular set of gauge-invariant operators.