# Jet substructure in high-energy hadron collisions

## TL;DR

This paper reviews recent progress in understanding jet substructure in high-energy hadron collisions, emphasizing its role as a precision probe for the quark-gluon plasma in heavy-ion experiments.

## Contribution

It highlights advancements in theoretical and experimental studies of jet substructure, enabling detailed insights into QCD and the quark-gluon plasma.

## Key findings

- Jet substructure observables provide valuable information about the QCD medium.
- Recent measurements allow for direct comparison between theory and experiment.
- Jet radiation patterns reveal interactions with the quark-gluon plasma.

## Abstract

In the past years significant progress has been made toward achieving a quantitative understanding of jets and their substructure in high-energy proton-proton collisions from first principles in QCD. Precise measurements have become available from the experimental collaborations at the LHC and RHIC allowing a direct comparison of theoretical calculations and data. These developments make it possible to use jet substructure observables as precision probes in heavy-ion collisions. The radiation pattern inside jets contains valuable information about the hot and dense QCD medium which can be investigated using jet substructure techniques. By studying the soft sensitivity of the different observables it is possible to obtain important insights into the interaction of hard probes with the quark gluon plasma.