Charmonium near the deconfining transition on the lattice

TL;DR

This paper investigates the behavior of charmonium states near the deconfining transition temperature using lattice QCD, revealing potential survival of bound states above the critical temperature despite simple models suggesting dissociation.

Contribution

It provides new lattice QCD evidence that charmonium may persist as bound-like structures above the deconfining temperature, challenging simple potential model predictions.

Findings

Bound-state-like structures may survive above T_c

Potential models may underestimate charmonium stability

Lattice QCD reveals complex in-medium charmonium behavior

Abstract

We study the charmonium properties at finite temperature using quenched lattice QCD simulations. Although a simple potential model analysis indicates no bound state at $T>1.05T_c$, our analyses of the spatial correlation between quark and anti-quark and the spectral function indicate that a bound-state-like structure may survive even above $T_c$.