Escape of Superheated Upsilons from the Quark Gluon Plasma

TL;DR

This paper explores the possibility that superheated upsilons can escape from the quark-gluon plasma, serving as a diagnostic tool to study the properties of this extreme state of matter.

Contribution

It proposes a novel scenario where hot upsilons form and escape the quark-gluon plasma, offering new insights into the plasma's characteristics.

Findings

Upsilons may remain bound and escape the plasma as superheated particles.

Mass of upsilons could be shifted upward by over 100 MeV in the plasma.

Escaping upsilons can serve as probes of the quark-gluon plasma environment.

Abstract

The properties of heavy quark systems change if they are placed in a medium other than the low energy vacuum. In a hot Quark Gluon Plasma $J/\Psi$ particles will melt and not exist as resonant states. $\Upsilon$'s, however, because of their smaller size and the dominance of the Coulomb potential, will still form as $Q\bar Q$ bound states but their properties will shift. In particular the $\Upsilon$ mass may be shifted upward by over 100 MeV. If such excited states manage to escape from the plasma as a superheated particle, they may serve as a diagnostic of the plasma in which they originated. We propose that such a scenario is possible and that hot $\Upsilon$'s will form and escape, thereby providing us with crucial information about the Quark Gluon Plasma.