Charmonium at high temperature in two-flavor QCD

TL;DR

This study investigates the behavior of charmonium states at high temperatures in two-flavor QCD, revealing that S-wave states persist near twice the critical temperature while P-wave states dissolve earlier.

Contribution

First lattice QCD study using maximum entropy method to analyze charmonium spectral functions at high temperatures with anisotropic lattices.

Findings

S-wave charmonium states survive up to ~2Tc

P-wave states melt below 1.2Tc

Spectral functions indicate different melting temperatures for S- and P-waves

Abstract

We compute charmonium spectral functions in 2-flavor QCD on anisotropic lattices using the maximum entropy method. Our results suggest that the S-waves (J/psi and eta_c) survive up to temperatures close to 2Tc, while the P-waves (chi_c0 and chi_c1) melt away below 1.2Tc.