Probing the Effect of Hadron Cascade-Time on Particle Production and Elliptic Flow(v2) in Xe+Xe Collisions at sNN = 5.44 TeV Using AMPT Model

Abstract

Extreme conditions of energy density and temperature are the prerequisites to produce a deconfined state of quarks and gluons in ultra-relativistic heavy-ion collisions. The initial state geometry of the created system gives rise to spatial anisotropy, which later results in the momentum anisotropy of the final state particles in non-central collisions. Anisotropic flow (especially elliptic flow) quantifies the momentum anisotropy of the produced system, which is one of the signatures of QGP. A deformed nucleus like Xenon (Xe) offers access to the initial geometry’s effect on final state particle production. This analysis focuses on the impact of hadron cascade-time on particle production and elliptic flow using A Multi-Phase Transport (AMPT) model by incorporating nuclear deformation in colliding nuclei for Xe+Xe collisions at sNN = 5.44 TeV. We analyze the effect of hadronic cascade-time on identified particle production by studying pT-differential particle ratios. The impact of hadronic cascade time on elliptic flow is studied by varying the cascade time between 5 and 25 fm/c. This study shows the final state interactions among particles generate additional anisotropic flow with increasing hadron cascade-time especially at very low and high-pT. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.