arXiv:nucl-th/0608050·v5·Nuclear Theory
Three-Particle Correlations from Parton Cascades in Au+Au Collisions
G. L. Ma🇨🇳 · Y. G. Ma🇨🇳 · S. Zhang🇨🇳 · X. Z. Cai🇨🇳 · J. H. Chen🇨🇳 · Z. J. He🇨🇳 · H. Z. Huang🇨🇳 · J. L. Long🇨🇳 · W. Q. Shen🇨🇳 · X. H. Shi🇨🇳 · C. Zhong🇨🇳 · J. X. Zuo🇨🇳
Abstract
We present a study of three-particle correlations among a trigger particle and two associated particles in Au + Au collisions at = 200 GeV using a multi-phase transport model (AMPT) with both partonic and hadronic interactions. We found that three-particle correlation densities in different angular directions with respect to the triggered particle (`center', `cone', `deflected', `near' and `near-away') increase with the number of participants. The ratio of `deflected' to `cone' density approaches to 1.0 with the increasing of number of participants, which indicates that partonic Mach-like shock waves can be produced by strong parton cascades in central Au+Au collisions.
Comments: 9 pages, 6 figures; Final version to appear in Physics Letters B