The temperature dependence of bottomonium states at temperatures above and below Tc is presented, using non-relativistic dynamics for the bottom quark and full relativistic lattice QCD simulations for two light flavors on a highly anisotropic lattice. We find that the S-waves (Υ and ηb) show little temperature dependence in this range while the P wave propagators show a crossover from the exponential decay characterizing the hadronic phase to a power-law behavior consistent with nearly-free dynamics at approximately twice the critical temperature.
@article{arxiv.1109.1475,
title = {Bottomonium at Non-zero Temperature from Lattice Non-relativistic QCD},
author = {Gert Aarts and Chris Allton and Seyong Kim and Maria Paola Lombardo and Mehmet B. Oktay and Sinead M. Ryan and D. K. Sinclair and Jon-Ivar Skullerud},
journal= {arXiv preprint arXiv:1109.1475},
year = {2011}
}
Comments
3 pages, 2 figures, talk presented at the 19th Particles & Nuclei International Conference (PANIC 2011), Massachusetts Institute of Technology, Cambridge, MA, USA, July 24-29, 2011