Elliptic flow of inclusive charged hadrons in Au+Au collisions at Elab = 35 A GeV using the PHSD model

Abstract

Abstract Elliptic flow ( v 2 ) of inclusive charged hadrons at mid-rapidity (∣ η ∣ < 1.0) in Au+Au collisions at E lab = 35 A GeV using the parton hadron string dynamics (PHSD) model are presented as a function of centrality, transverse momentum ( p T ) and pseudo-rapidity ( η ). The v 2 results are obtained using the η -sub event plane method with respect to the event plane angle ( ψ 2 ) and participant plane angle ( ψ 2 PP ). p T -integrated charged hadron v 2 shows a strong centrality dependence in Au+Au collisions at E lab = 35 A GeV. The eccentricity-scaled elliptic flow ( v 2 / ε 2 ) also shows centrality dependence. The higher values of v 2 / ε 2 in central collisions suggest the development of stronger collectivity. The calculations are compared with the results from Au+Au collisions at s NN = 7.7 GeV published by the STAR experiment at RHIC. We also compare the results of HSD and PHSD modes to investigate the contribution of hadronic and partonic phases of the medium on the calculated v 2 . The current results serve as a prediction of the collective behavior of the matter produced in baryon-rich and moderate temperature conditions for the upcoming multi-purpose detector at the nuclotron-based Ion collider facility (NICA) and compressed baryonic matter experiment at the facility for antiproton and ion research. These predictions are also useful for interpreting data measured at relativistic heavy ion collider (RHIC) beam energy scan program.