# Radiative parton energy loss and baryon stopping in $AA$ collisions

## TL;DR

This paper investigates how radiative energy loss affects proton stopping in heavy-ion collisions, suggesting it can partly explain the observed net proton distribution features at certain energies.

## Contribution

It applies the light-cone path integral approach to analyze radiative gluon emission's role in proton stopping and net proton distribution in $AA$ collisions.

## Key findings

- Radiative correction can partly fill the midrapidity dip in net proton distribution.
- At $
oot s \\sim 10$ GeV, net proton fluctuations may be dominated by initial proton flow fluctuations.
- Initial fluctuations of proton flow are approximately binomial.

## Abstract

We study the radiative energy loss contribution to proton stopping in $AA$ collisions. The analyses is performed within the light-cone path integral approach to induced gluon emission. We have found that the radiative correction can fill in partly the midrapidity dip in the net proton rapidity distribution in $AA$ collisions at $\sqrt{s}\sim 10$ GeV. We argue that at $\sqrt{s}\sim 10$ GeV the net proton fluctuations at midrapidity may be dominated by the initial fluctuations of the proton flow, which, to a good accuracy, should be binomial.