Fireball tomography from bottomonia elliptic flow in relativistic heavy-ion collisions

Abstract

We calculate the elliptic flow of bottomonia produced in Pb$+$Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV. We consider temperature-dependent decay widths for the anisotropic escape of various bottomonium states and observe that the transverse momentum dependence of bottomonia elliptic flow provides a tomographic information about the QGP fireball at different stages of its evolution. For the space-time evolution of the fireball, we employ simulation results from the 3+1D quasiparticle anisotropic hydrodynamic model. We find that our results for transverse momentum dependence of bottomonia elliptic flow are in reasonable agreement with experimental results from the ALICE and CMS collaborations.

Comments: 8 pages, 5 figures, ancillary files with data of the figures are included in the source