Study of the azimuthal asymmetry in heavy ion collisions combining initial state momentum orientation and final state collective effects

2023/07/31 by Moriggi, Lucas Soster, Rocha, Érison dos Santos, Machado, Magno Valério Trindade
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th)

paper · doi:10.48550/arxiv.2308.00181

Abstract

In the present work we investigate the source of azimuthal asymmetry for nuclear collision using a model that contemplates particles produced in the initial hard collisions and the collective effects described by a Blast-Wave like expansion. The latter is described by the relaxation time approximation of the Boltzmann transport equation. The parameters regarding collective flow and asymmetry are fitted by the experimental data from p_T spectrum and v₂ for PbPb and XeXe collisions at different centrality classes. As a by-product the ratio of final elliptic flow with the initial anisotropy, v₂/ε₂, and the average transverse momentum are predicted.

Related

• Systematics of azimuthal asymmetries in heavy ion collisions in the 1 A GeV regime
• Directed, Elliptic and Triangular Flows in Asymmetric Heavy Ion Collisions
• Collective effects in a medium and a model of compound flow in relativistic heavy ion collisions
• Disentangling spatial and flow anisotropy
• Collective phenomena in non-central nuclear collisions