Anisotropic escape mechanism and elliptic flow of bottomonia.

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. For the latter, we use initial conditions from a Glauber model and mimic the transverse expansion of the fireball in an effective way, assuming longitudinal boost invariance. We provide the first quantitative prediction for bottomonium elliptic flow generated from an anisotropic escape mechanism.