Gluon saturation and baryon stopping in the SPS, RHIC and LHC energy regions

TL;DR

This paper introduces a geometrical scaling method based on gluon saturation to analyze baryon stopping and net-baryon distributions in high-energy nuclear collisions across SPS, RHIC, and LHC energies.

Contribution

It proposes a novel geometrical scaling approach incorporating gluon saturation limits to study baryon stopping in relativistic nuclear collisions.

Findings

Predicted net-baryon rapidity distributions at LHC energies.

Analyzed nuclear stopping power across different energy regions.

Identified gluon saturation features in the central rapidity region.

Abstract

A new geometrical scaling method with gluon saturation rapidity limit is proposed to study the gluon saturation feature of the central rapidity region of relativistic nuclear collisions. The net-baryon number is essentially transported by valence quarks that probe the saturation regime in the target by multiple scattering. We take advantage of the gluon saturation model with geometric scaling of the rapidity limit to investigate the net baryon distributions, nuclear stopping power and gluon saturation features in the SPS and RHIC energy regions. Predictions for net-baryon rapidity distributions, the mean rapidity loss and gluon saturation feature in central Pb + Pb collisions at LHC are made in this paper.