Parton rearrangement and fast thermalization in heavy-ion collisions at RHIC and LHC energies

TL;DR

This paper investigates how parton rearrangement influences the dynamics and rapid thermalization in ultra-relativistic heavy-ion collisions at RHIC and LHC energies using an extended microscopic transport model.

Contribution

It introduces an extension to the quark gluon string model incorporating density-dependent partonic rearrangement and fusion, providing new insights into collision dynamics.

Findings

Effective emulation of strongly coupled quark plasma dynamics

Results on anisotropic flow v1 and v2 at RHIC energies

Predictions for flow pseudorapidity dependence at LHC energies

Abstract

The implications of parton rearrangement processes on the dynamics of ultra-relativistic heavy-ion collisions have been investigated. A microscopic transport approach, namely the quark gluon string model (QGSM) which has been extended for a locally density-dependent partonic rearrangement and fusion procedure served as the tool for this investigations. The model emulates effectively the dynamics of a strongly coupled quark plasma and final hadronic interactions. Main QGSM results on anisotropic flow components v1 and v2 at top RHIC energy are compiled. Predictions for the pseudorapidity dependence of directed and elliptic flow in Pb+Pb collisions under LHC conditions are presented.