Elliptic flow of charged hadrons in d+Au collisions at √s_NN = 200 GeV using a multi-phase transport model

2025/06/28 by Tanwar, Jaideep, Aggarwal, Ishu, Bairathi, Vipul +2
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Experiment (nucl-ex) #Nuclear Theory (nucl-th)

paper · doi:10.48550/arxiv.2506.22721

Abstract

This study presents a comprehensive analysis of the elliptic flow coefficient, v₂, for charged hadrons at mid-rapidity in d+Au collisions at √s_NN = 200~GeV. Utilizing the AMPT model in both default and string melting modes, we examine the dependence of v₂ on transverse momentum, collision centrality, and particle type. Furthermore, we present v₂ scaled by participant eccentricity, which indicates a similar level of collectivity across different centrality intervals in d+Au collisions at √s_NN = 200~GeV within the AMPT-SM model. Our results indicate that the early-stage partonic phase significantly influences v₂, as observed by variations in parton scattering cross-section, while the later stage hadronic rescattering shows minimal impact. Comparisons with STAR and PHENIX experimental data show that the AMPT model effectively captures the transverse momentum dependence of v₂, underlining the importance of parton scattering mechanisms and the need for careful interpretation of experimental results in asymmetric systems.

Related

• Elliptic flow of inclusive charged hadrons in Au+Au collisions at E_lab = 35~A~GeV using the PHSD model
• Energy Dependence of Elliptic Flow Ratio v₂^PP/v₂^RP in Heavy-ion Collisions Using the AMPT Model
• Collision energy dependence of elliptic flow of identified hadrons in heavy-ion collisions using the PHSD model
• Transport-model investigation of scaling of the number of constituent quarks and the hadronic-partonic transition in Au + Au collisions
• System size dependence of charged hadrons directed flow at √s_NN = 200 GeV using a multi-phase transport model