# Effects of jet-medium interactions on angular correlations of jet-particle pairs at different energy scales

## TL;DR

This paper investigates how different jet-medium interaction mechanisms in quark-gluon plasma affect angular correlations of jet-particle pairs across various energy scales, revealing qualitative differences between radiative and collisional energy loss models.

## Contribution

The study introduces effective models to differentiate the effects of radiative and collisional energy loss mechanisms on jet angular broadening in QGP.

## Key findings

- Qualitative differences observed between radiative and collisional models.
- Angular jet-broadening varies with particle momentum scales.
- Effective models help disentangle different energy-loss contributions.

## Abstract

The energy-loss of hard probes within the hot and dense medium of a quark gluon plasma (QGP) can be described by theoretical models based on radiative energy loss as well as combinations of collisional and radiative energy loss. In a search for observables that allow to disentangle these energy-loss mechanisms, we introduced a set of effective models that allows to investigate the consequences on jets of both types of jet-medium interactions within a consistent framework. We particularly studied angular jet-broadening via angular two-particle correlations. Distinguishing contributions from pairs at different scales of particle momenta, we found qualitative differences between radiative and collisional approaches.