Anti-proton to proton ratios from Au plus Au collisions at root(s)-NN=200 GeV by RQMD

摘要

Events of Au + Au collisions from AGS to RHIC energies by RQMD (v2.4) generator are produced. (p) over bar /p ratios as functions of rapidity, transverse momentum and centrality at rootS(NN) = 200 GeV are studied. The dependence on the center of mass energy of (p) over bar /p ratios is presented, compared with the experimental results. It is shown that (p) over bar /p ratio from rescattering RQMD is lower than those of the experiments at RHIC energies. We argue that hadronic rescattering at RHIC energies is suppressed compared to AGS, SPS energies. [References: 16]