Collision energy dependence of elliptic flow of identified hadrons in heavy-ion collisions using the PHSD model

We report the first predictions of elliptic flow (v₂) of identified hadrons at mid-rapidity ($|y| <$ 1.0) in Au+Au collisions at Elab = 6.7, 8, 11, and 25 A GeV using the Parton Hadron String Dynamics (PHSD) model. The transverse momentum (pT) dependence of identified hadron v₂ in different centrality intervals (0-10%, 10-40%, and 40-80%) are shown. A clear centrality dependence of v₂(pT) is observed for particles at Elab = 25 and 11 A GeV, while the centrality dependence becomes weaker for particles at Elab = 8 and 6.7 A GeV. Within the PHSD model, the number of constituent quark (NCQ) scaling of v₂ approximately follows in Au+Au collisions at all beam energies. A collision energy (√sNN) dependence of π, K, and p v₂ is studied in comparison with available published experimental data in the beam energy range of 6-25 A GeV. These predictions will help in interpreting the data from the forthcoming Compressed Baryonic Matter (CBM) experiment at the Facility for Antiproton and Ion Research (FAIR) and Multi-Purpose Detector (MPD) at the Nuclotron-based Ion Collider facility (NICA).