Work

Elliptic flow of charged hadrons in d + Au collisions at s N N = 200 GeV using a multiphase transport model

Year: 2026

Type: article

Abstract: This study presents a comprehensive analysis of the elliptic flow coefficient, $v_2$, for charged hadrons at mid-rapidity in d+Au collisions at $\sqrt{s_{\mathrm{NN}}} = 200\mathrm{~GeV}$. Utilizing the AMPT model in both default and string melting modes, we examine the dependence of $v_2$ on transverse momentum, collision centrality, and particle type. Furthermore, we present $v_2$ scaled by participant eccentricity, which indicates a similar level of collectivity across different centrality intervals in d+Au collisions at $\sqrt{s_{\mathrm{NN}}} = 200\mathrm{~GeV}$ within the AMPT-SM model. Our results indicate that the early-stage partonic phase significantly influences $v_2$, 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 $v_2$, underlining the importance of parton scattering mechanisms and the need for careful interpretation of experimental results in asymmetric systems.

Source: Physical Review C

DOI: 10.1103/zgsy-yn8n

Authors: J. Tanwar, I. Aggarwal, L. Kumar, V. Bairathi, S. Kabana

Institutions: Panjab University, University of Tarapacá

Language: English

Topic: High-Energy Particle Collisions Research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Department of Science and Technology, Ministry of Science and Technology, India, Agencia Nacional de Investigación y Desarrollo

Awards: SEARCH FOR MULTIQUARK STATES IN NUCLEAR COLLISIONS AND IMPROVING MUON DETECTION WITH THE NEW SMALL WHEELS DETECTORS OF ATLAS, G4775704806