Anisotropic escape mechanism and elliptic flow of bottomonia

TL;DR

This paper investigates how anisotropic escape mechanisms contribute to the elliptic flow of bottomonia in heavy-ion collisions, using advanced hydrodynamic simulations to predict their behavior at LHC energies.

Contribution

It introduces a detailed model combining temperature-dependent decay widths with 3+1d anisotropic hydrodynamics to predict bottomonium elliptic flow and suppression.

Findings

Quantitative predictions for bottomonium elliptic flow at LHC energies.

Demonstrates the significance of anisotropic escape in bottomonium flow.

Provides insights into bottomonium suppression patterns in heavy-ion collisions.

Abstract

We study the role of anisotropic escape in generating the elliptic flow of bottomonia produced in ultrarelativistic heavy-ion collisions. We implement temperature-dependent decay widths for the various bottomonium states, to calculate their survival probability when traversing through the anisotropic hot medium formed in non-central collisions. We employ the recently developed 3+1d quasiparticle anisotropic hydrodynamic simulation to model the space-time evolution of the quark-gluon plasma. We provide a quantitative prediction for transverse momentum dependence of bottomonium elliptic flow and nuclear modification factor for Pb$\,+\,$Pb collisions in $\sqrt{s_{\rm NN}}=2.76$ TeV at the Large Hadron Collider.