Hydrodynamic evolution and jet energy loss in Cu+Cu collisions

TL;DR

This paper models Cu+Cu collisions using a hybrid approach combining hydrodynamics and Monte-Carlo simulations to study the evolution and jet energy loss, focusing on small system sizes and initial energy density scaling.

Contribution

It introduces a hybrid modeling framework for Cu+Cu collisions and investigates the effects of system size and initial energy density scaling on the description's validity.

Findings

Cu+Cu collisions are well described up to 20% centrality.

The hybrid model effectively captures the bulk evolution and jet quenching.

Dependence on initial energy density scaling is analyzed.

Abstract

We present results from a hybrid description of Cu+Cu collisions using 3+1 dimensional hydrodynamics (MUSIC) for the bulk evolution and a Monte-Carlo simulation (MARTINI) for the evolution of high momentum partons in the hydrodynamical background. We explore the limits of this description by going to small system sizes and determine the dependence on different fractions of wounded nucleon and binary collisions scaling of the initial energy density. We find that Cu+Cu collisions are well described by the hybrid description at least up to 20% central collisions.