Charmonium dissociation and heavy quark transport in hot quenched lattice QCD

TL;DR

This paper investigates how charmonium states behave at high temperatures using quenched lattice QCD, revealing their dissociation points and estimating charm quark diffusion coefficients in quark-gluon plasma.

Contribution

It provides new insights into charmonium spectral functions and charm quark transport properties at finite temperature in quenched lattice QCD.

Findings

S wave charmonium states dissociate around 1.5 Tc

Charm diffusion coefficient estimated at approximately 1/πT between 1.5 Tc and 3 Tc

Detailed analysis of correlation and spectral functions across temperature range

Abstract

We study the properties of charmonium states at finite temperature in quenched lattice QCD on large and fine isotropic lattices. We perform a detailed analysis of charmonium correlation and spectral functions both below and above Tc. Our analysis suggests that the S wave states disappear at about 1.5 Tc. The charm diffusion coefficient is estimated and found to be approximately 1/{\pi}T at 1.5Tc {\leq} T {\leq} 3Tc.