Charmonium spectral functions in Nf=2 QCD at high temperature
G. Aarts, C. R. Allton, R. Morrin, A. P. O Cais, M. B. Oktay, M. J. Peardon, J. I. Skullerud
Abstract
Charmonium systems in two-flavour QCD at non-zero temperature are studied at, and above the deconfining transition. Using anisotropic lattices the MEM approach is used to extract spectral functions for these channels. By carefully varying some of the irrelevant parameters in the MEM procedure, we confirm that our systematic effects are under control. The etac and J/psi states are found to persist at temperatures >~ 1.3 Tc in agreement with our previous dynamical studies.
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