Centrality and transverse momentum dependence of anisotropic flow coefficients and their correlations in Xe–Xe collisions at = 5.44 TeV

Abstract

The study of anisotropic flow coefficients v n (n = 2, 3, 4) in Xe–Xe collisions at = 5.44 TeV under the Monte Carlo HYDJET++ model (HYDrodynamics plus JETs) framework is presented. We have also considered body–body and tip–tip types of geometrical configurations for xenon nuclei within the model. The kinematic ranges |η| < 0.8, 0 < p T < 5.0 GeV/c, |Δη| > 1 and |Δη| > 2 are considered. HYDJET++ results for deformed Xe–Xe collisions are well supported by the ALICE experimental data. The anisotropic flow of identified charged hadrons has strong transverse momentum and centrality dependence. Anisotropic flow decreases as collision system-size increases. Spherical xenon collisions show a suitable match with (deformed) tip–tip collision results. Body–body collisions produce higher flow in comparison to minimum bias and tip–tip collisions. Global mass ordering is observed in low and high p T regions. The interplay of soft processes, jets, and decay resonances is responsible for the observed identified particle mass order. A strong centrality-dependent correlation is observed between the flow harmonics (v 2, v 3, v 4). HYDJET++ model predicts a linear positive correlation in central collisions while a boomerang-like correlation structure exists in peripheral collisions as found in the ALICE experiment. We find a strong dependence of the above observables on the geometry of the collision.