Particle productions and anisotropic flows from the AMPT model for Cu+Au collisions at √s_NN=200 GeV

2020/04/01 by Yuncun He, Zi-Wei Lin
Physics and Astronomy · #Anisotropy #Asymmetry #Dust and Plasma Wave Phenomena #Elliptic flow #Hadron #High-Energy Particle Collisions Research #Particle (ecology) #Rapidity #Statistical Mechanics and Entropy #String (physics) #Transverse plane #hep-ph #nucl-th

paper · pdf · doi:10.1140/epja/s10050-020-00128-6

9 pages, 10 figures

openalex publication_date 2020/04/01 · arxiv created 2020/04/14 · openalex created_date 2020/04/24 · arxiv updated 2020/05/20 · openalex updated_date 2026/08/05

Abstract

We use the string melting version of a multi-phase transport (AMPT) model to study Cu+Au collisions at √s_NN=200 GeV. The rapidity distributions of identified hadrons show asymmetric dependences on rapidity. In addition, elliptic and triangular flows at mid-rapidity from the AMPT model for pions, kaons, and protons agree reasonably with the experimental data up to p_T∼1 GeV/c. We then investigate the forward/backward asymmetry of v₂ and v₃. We find that these anisotropic flows are larger on the Au-going side than the Cu-going side, while the asymmetry tends to go away in very peripheral collisions. We also make predictions on transverse momentum spectra of identified hadrons and longitudinal decorrelations of charged particles, where the average decorrelation of elliptic flow in asymmetric Cu+Au collisions is found to be stronger than that in Au+Au collisions.

Citations

• Elliptic and Triangular Flow in Event-by-EventD=3+1Viscous Hydrodynamics
• Longitudinal decorrelation of anisotropic flows in heavy-ion collisions at the CERN Large Hadron Collider
• Elliptic and Triangular Flow inp-Pb and Peripheral Pb-Pb Collisions from Parton Scatterings
• Multiphase transport model for relativistic heavy ion collisions