Beam energy dependence of transverse momentum distribution and elliptic flow in Au-Au collisions using HYDJET++ model

In this work, we present the transverse momentum spectra and elliptic flow (v₂) of ^, k^, p and p in Au-Au collisions at s₍₍= 62. 4, 39. 0, 27. 0, 19. 6 and 11. 5 GeV using HYDJET++ model. For each beam energy the transverse momentum spectra are shown in four centrality classes at mid rapidity |y| 0. 1 and for elliptic flow (v₂) we have shown results for minimum bias events. We have performed a qualitative comparison between the hard and soft processes at different beam energies. The HYDJET++ model calculations for particle ratios, pT spectra, and v₂ agree well with the available experimental data. The HYDJET++ parameters like baryonic and strangeness chemical potential, and chemical and thermal freeze-out temperature vary with collision energy. Azimuthal spatial anisotropy () and azimuthal momentum anisotropy () decrease with collision energy which leads to a smaller value of v₂ at lower collision energies. Furthermore, the hadrons containing strange quarks tend to have smaller values of spatial and momentum anisotropy than the non-strange hadrons.