# Parton energy loss in QCD matter

## TL;DR

This paper discusses how jet substructure observables can be used to better understand the modifications of QCD jets caused by the quark-gluon plasma in heavy-ion collisions, aiding in probing the QGP's properties.

## Contribution

It highlights the potential of jet substructure measurements as novel tools for studying jet quenching and medium modifications in QGP.

## Key findings

- Jet substructure observables offer new insights into jet quenching.
- Understanding jet fragmentation helps probe QGP properties.

## Abstract

QCD jets, produced copiously in heavy-ion collisions at LHC and also at RHIC, serve as probes of the dynamics of the quark-gluon plasma (QGP). Jet fragmentation in the medium is interesting in its own right and, in order to extract pertinent information about the QGP, it has to be well understood. We present a brief overview of the physics involved and argue that jet substructure observables provide new opportunities for understanding the nature of the modifications.