Critical Behavior of J/psi across the Phase Transition from QCD sum rules

TL;DR

This paper investigates how the properties of J/psi particles change near the QCD phase transition using QCD sum rules and lattice data, revealing rapid modifications in mass and width.

Contribution

It introduces a method to analyze J/psi behavior across the QCD phase transition incorporating temperature-dependent gluon condensates from lattice thermodynamics.

Findings

J/psi mass decreases rapidly near the critical temperature

J/psi width increases sharply across the phase transition

The study links gluon condensate changes to J/psi property modifications

Abstract

We study behavior of J/psi in hot gluonic matter using QCD sum rules. Taking into account temperature dependences of the gluon condensates extracted from lattice thermodynamics for the pure SU(3) system, we find that the mass and width of J/psi exhibit rapid change across the critical temperature.