Bremsstrahlung as a probe of baryon stopping in heavy-ion collisions

TL;DR

This paper explores how bremsstrahlung radiation emitted during ultra-relativistic heavy-ion collisions can serve as a sensitive probe to measure baryon stopping and energy loss of protons.

Contribution

It introduces a calculation of bremsstrahlung spectra for various stopping scenarios and compares these with photon yields from hadronic interactions.

Findings

Bremsstrahlung radiation spectra vary with different baryon stopping scenarios.

The angular distribution of emitted radiation provides insights into proton energy loss.

Results suggest bremsstrahlung can effectively probe baryon stopping in heavy-ion collisions.

Abstract

In collisions between heavy ions at ultra-relativistic energies the participating protons lose energy, which is converted into new particles. As the protons slow down, they emit bremsstrahlung radiation. The yield and angular distribution of the emitted radiation are sensitive probes of how much energy the incoming protons have lost. In this paper, the spectrum of bremsstrahlung radiation is calculated for different stopping scenarios, and the results are compared with the expected yield of photons from hadronic interactions.