Direct Photons from a Hybrid Approach -- Exploring the parameter space

TL;DR

This paper investigates how varying the interface parameters in a hybrid transport and hydrodynamics model affects the calculated spectra of direct photons in high-energy collisions.

Contribution

It introduces a hybrid approach combining transport and hydrodynamics to study direct photon production and explores the impact of interface parameter variations.

Findings

Interface parameter changes significantly influence photon spectra

Hybrid model provides insights into high-density collision phases

Parameter tuning improves agreement with experimental data

Abstract

Direct photon spectra are calculated within a transport+hydrodynamics hybrid approach, in which the high-density part of the transport evolution has been replaced by a 3+1-dimensional hydrodynamic calculation. We study the effects of changing the parameters of the two interfaces between the transport- and hydrodynamic descriptions on the resulting direct photon spectra.