Bottomonium above deconfinement in lattice nonrelativistic QCD |
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Authors: | Aarts G Kim S Lombardo M P Oktay M B Ryan S M Sinclair D K Skullerud J-I |
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Institution: | Department of Physics, Swansea University, Swansea SA2 8PP, United Kingdom. |
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Abstract: | We study the temperature dependence of bottomonium for temperatures in the range 0.4T(c) < T < 2.1T(c), using nonrelativistic dynamics for the bottom quark and full relativistic lattice QCD simulations for Nf = 2 light flavors on a highly anisotropic lattice. We find that the Υ is insensitive to the temperature in this range, while the χb propagators show a crossover from the exponential decay characterizing the hadronic phase to a power-law behavior consistent with nearly free dynamics at T ? 2T(c). |
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