We present lattice non-relativistic QCD calculations of bottomonium correlation functions at temperatures T≃150−350 MeV. The correlation functions were computed using extended bottomonium operators, and on background gauge-field configurations for 2+1-flavor QCD having physical kaon and nearly-physical pion masses. We analyzed these correlation functions based on simple theoretically-motivated parameterizations of the corresponding spectral functions. The results of our analyses are compatible with significant in-medium thermal broadening of the ground state S- and P-wave bottomonia.
@article{arxiv.1908.08437,
title = {Thermal Broadening of Bottomonia: Lattice Non-Relativistic QCD with Extended Operators},
author = {Rasmus Larsen and Stefan Meinel and Swagato Mukherjee and Peter Petreczky},
journal= {arXiv preprint arXiv:1908.08437},
year = {2020}
}