Quarkonium in a viscous QGP

TL;DR

This paper investigates how viscosity influences quarkonium properties in a quark-gluon plasma using both perturbative and holographic methods, providing predictions for binding energies and suppression patterns.

Contribution

It introduces viscosity corrections to the static QCD potential and offers model-based predictions for quarkonium behavior in a viscous quark-gluon plasma.

Findings

Viscosity affects the static QCD potential in thermal medium.

Predicted quarkonium binding energies in deconfined phase.

Estimated suppression of Upsilon to electron-positron decay.

Abstract

I discuss viscosity corrections to thermal effects on the static QCD potential within hard-thermal loop resummed perturbation theory and for a strongly coupled, large-N_c conformal field theory dual to five-dimensional Gauss-Bonnet gravity. I also present model predictions for quarkonium binding energies in the deconfined phase and for suppression of R_{AA}(Upsilon --> e+ e-).