Dissipative hydrodynamic evolution of hot quark matter at finite baryon density

TL;DR

This paper develops a dissipative hydrodynamic model at finite baryon density to study net baryon distribution in hot quark matter, revealing effects of diffusion and collision transparency in heavy ion collisions.

Contribution

A novel dissipative hydrodynamic model at finite baryon density is introduced to analyze net baryon rapidity distribution in quark matter.

Findings

Net baryon distribution widens during hydrodynamic evolution.

Collision transparency is effectively enhanced.

Baryon diffusion significantly influences the distribution.

Abstract

High-energy heavy ion collider experiments at RHIC and LHC have revealed that relativistic hydrodynamic models describe the hot and dense quark matter quantitatively. In this study, I develop a novel dissipative hydrodynamic model at finite baryon density to investigate the net baryon rapidity distribution. The results show that the distribution is widened in hydrodynamic evolution, which implies that the transparency of the collisions is effectively enhanced. This suggests that the kinetic energy loss for medium production at the initial stage could be larger. Furthermore, the net baryon distribution is found sensitive to baryon diffusion, implying that dissipative hydrodynamic modeling would be important for understanding the hot medium.