THE COLLECTIVITY IN CSR 129Xe+129Xe COLLISIONS

Abstract

The Heavy Ion Research Facility in Lanzhou (HIRFL) – Cooler Storage Ring (CSR), which can gather few hundreds MeV/nucleon for heavy ion beam energy in the external-target experiments, could make a significant contribution in studying the property of dense matter. By using a Relativistic Transport Model(ART1.0), we study the collectivity of identified hadrons in 129 Xe +129 Xe collisions in CSR energy regions. Our investigation indicates that the anisotropic flow reaches its extremum around 500 MeV/nucleon of beam energy. The system size and EOS dependence on anisotropic flow show that directed flow is very sensitive to the equation of state.