Elastic parton scattering and nonstatistical event-by-event mean-ptfluctuations inAu+Aucollisions atsNN=130and 200 GeV

2008/01/14 by Qing-Jun Liu, Weiqin Zhao, Wei-Qin Zhao
Physics and Astronomy · #Astrophysics #Elastic scattering #Event (particle physics) #High-Energy Particle Collisions Research #Mathematical physics #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Parton #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Scattering #Sigma #Star (game theory) #String (physics) #nucl-th

paper · pdf · doi:10.1103/physrevc.77.034902

published as Phys.Rev.C77:034902,2008 · 6 pages, 3 figures

arxiv created 2008/01/14 · openalex publication_date 2008/03/13 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Nonstatistical event-by-event mean-p_t fluctuations in Au+Au collisions at √s_NN=130 and 200 GeV are analyzed in the multiphase transport model (AMPT) with string melting, and the results are compared with STAR data. The analysis suggests that in-medium elastic parton scattering may contribute greatly to the mean-p_t fluctuations in relativistic heavy-ion collisions. Furthermore, it is demonstrated that nonstatistical event-by-event mean-p_t fluctuations can be used to probe the initial partonic dynamics in these collisions. The comparison shows that with an in-medium elastic parton-scattering cross section \ensuremathσ_p=10 mb, AMPT with string melting can well reproduce √s_NN=130 GeV data on the centrality dependence of nonstatistical event-by-event mean-p_t fluctuations. The comparison also shows that the fluctuation data for √s_NN=200 GeV Au+Au collisions can be well reproduced with \ensuremathσ_p between 6 and 10 mb.

Citations

• Transverse momentum fluctuations and percolation of strings
• Conical Flow induced by Quenched QCD Jets
• Di-hadron azimuthal correlation and Mach-like cone structure in a parton/hadron transport model
• Mach cones in an evolving medium
• J/ψproduction in relativistic heavy ion collisions from a multiphase transport model
• Mach shocks induced by partonic jets in expanding quark–gluon plasma
• Transverse momentum fluctuations due to temperature variation in high-energy nuclear collisions
• Multiphase transport model for relativistic heavy ion collisions
• Experimental and theoretical challenges in the search for the quark–gluon plasma: The STAR Collaboration's critical assessment of the evidence from RHIC collisions
• Collective flow signals the quark–gluon plasma