Higher flow harmonics of strange hadrons in Au+Au collisions at $\sqrt {s_{{{\text{NN}}}} }$ = 200 GeV and Pb+Pb collisions at $\sqrt {s_{{{\text{NN}}}} }$ = 2.76 TeV with HYDJET++ model

Abstract

Using the HYDJET++ model, we measure the higher-order flow harmonics $v_{n}$ (n = 2, 3, 4) of (multi-) strange hadrons in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}$ = 200 GeV and Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV. We have compared our model results with the available experimental data at RHIC and LHC energies. The model reproduces the higher flow harmonics of (multi-) strange hadrons as a function of $p_{\mathrm{T}}$, centrality, and quark content. We have studied and discussed mass ordering of flows $v_{n}$ (n = 2, 3, 4) among $\pi ^{+}+\pi ^{-}$, $K^{-}+K^{+}$, $K_{s}^{0}$, $p+\overline{p}$, $\Lambda +\overline{\Lambda }$, $\Xi ^{-}+\overline{\Xi }^{+}$, and $\Omega ^{-}+\overline{\Omega }^{+}$ at low $p_{\mathrm{T}}$ and the baryon-meson grouping at intermediate $p_{\mathrm{T}}$. We observe NCQ scaling in both RHIC as well as LHC energy regimes. Study of flow harmonics behaviour at RHIC and LHC energy regimes will provide an additional insight into the dynamics of anisotropic flow and the effect of radial flow expansion in the system.