Gluon saturation and pseudo-rapidity distributions of charged hadrons at RHIC energy regions

TL;DR

This paper combines a modified gluon saturation model with hydrodynamic evolution to analyze charged hadron distributions in Au-Au collisions at RHIC, revealing the interplay of saturation effects and hydrodynamics across energies and centralities.

Contribution

It introduces a rescaled gluon saturation model integrated with hydrodynamics to systematically study particle distributions in heavy-ion collisions.

Findings

Gluon saturation effects influence pseudo-rapidity distributions.

Hydrodynamic evolution shapes the final charged hadron distributions.

Results vary with collision energy and centrality.

Abstract

We modified the gluon saturation model by rescaling the momentum fraction according to saturation momentum and introduced the Cooper-Frye hydrodynamic evolution to systematically study the pseudo-rapidity distributions of final charged hadrons at different energies and different centralities for Au-Au collisions in relativistic heavy-ion collisions at BNL Relativistic Heavy Ion Collider (RHIC). The features of both gluon saturation and hydrodynamic evolution at different energies and different centralities for Au-Au collisions are investigated in this paper.