EPJ Web Conf.
Volume 175, 201835th International Symposium on Lattice Field Theory (Lattice 2017)
|Number of page(s)||8|
|Section||7 Nonzero Temperature and Density|
|Published online||26 March 2018|
Continuum extrapolation of quarkonium correlators at non-zero temperature
Key Laboratory of Quark & Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan 430079, China
2 Fakultät für Physik, Universität Bielefeld, 33615 Bielefeld, Germany
3 Physics Department, Brookhaven National Laboratory, Upton, NY 11973, USA
4 Center for Computational Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
* Speaker, e-mail: email@example.com
Published online: 26 March 2018
In the investigation of in-medium modifications of quarkonia and for determining heavy quark diffusion coeffcients, correlation functions play a crucial role. For the first time we perform a continuum extrapolation of charmonium and bottomonium correlators in the vector channel based on non-perturbatively clover-improved Wilson fermions in quenched lattice QCD. Calculations were done at 4 different lattice spacings, spatial extents between 96 and 192, aspect ratio from 1/6 to 1/2, for 5 temperatures between T/Tc = 0:75 and T/Tc = 2:2. We interpolate between different quark masses to match to the same vector meson mass over different lattice setups. Afterwards we extrapolate the renormalized correlators to the continuum. While we find a strong temperature dependence for charmonium, bottomonium states are only slightly affected at higher temperatures.
© The Authors, published by EDP Sciences, 2018
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