Speaker
Description
We will present our analysis of continuum extrapolated charmonium and bottomonium correlators calculated from very large and fine lattices in the pure SU(3) plasma using clover-improved Wilson valence quarks, extending the study of the pseudo-scalar channel [1].
Two sources of systematic errors may arise in the comparison. On the lattice side, the renormalization constants are not exactly known, while on the perturbative side thermal mass shifts appear. To account for this, we introduce two factors, an overall renormalization factor and a mass shift, which are determined in a fit of the perturbative model to the correlator. As a cross-check the results of this fit are then compared to MEM results. We begin with the investigation of the pseudoscalar channel as done in [1] and extend the knowledge gained there to the vector channel, where in addition to the analysis of the thermal modification of heavy quark bound states we try to get an estimate of the heavy quark diffusion coefficient.
[1] Y. Burnier, H.-T. Ding, O. Kaczmarek, A.-L. Kruse, M. Laine, H. Ohno, H. Sandmeyer, Thermal quarkonium physics in the pseudoscalar channel. JHEP 2017, 11, 206, doi:10.1007/JHEP11(2017)206
