Gert Aarts, Chris Allton, Seyong Kim, Maria Paola Lombardo, Mehmet B. Oktay, Sinead M. Ryan, D. K. Sinclair, Jon-Ivar Skullerud, Bottomonium at Non-zero Temperature from Lattice Non-relativistic QCD, Particles & Nuclei International Conference (PANIC 2011), Massachusetts Institute of Technology, 24-29 July, 2011
The temperature dependence of bottomonium states at temperatures above and below $T_c$ 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 ($\Upsilon$ and $\eta_b$) 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.
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