Charmonium at high temperature in two-flavor QCD

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 ($J/\ensuremath{\psi}$ and ${\ensuremath{\eta}}_{c}$) survive up to temperatures close to $2{T}_{c}$, while the P-waves (${\ensuremath{\chi}}_{c0}$ and ${\ensuremath{\chi}}_{c1}$) melt away below $1.2{T}_{c}$.