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    What happens to the Υ and η b in the quark-gluon plasma? Bottomonium spectral functions from lattice QCD


    Aarts, Gert and Allton, Chris and Kim, Seyong and Lombardo, M. P. and Oktay, M. B. and Ryan, S. M. and Sinclair, D. K. and Skullerud, Jon-Ivar (2011) What happens to the Υ and η b in the quark-gluon plasma? Bottomonium spectral functions from lattice QCD. Journal of High Energy Physics, 11 (103). ISSN 1126-6708

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    Abstract

    We study bottomonium spectral functions in the quark-gluon plasma in the Υ and η b channels, using lattice QCD simulations with two flavours of light quark on highly anisotropic lattices. The bottom quark is treated with nonr elativistic QCD (NRQCD). In the temperature range we consider, 0 . 42 ≤ T/T c ≤ 2 . 09, we find that the ground states survive, whereas the excited states are suppressed as the te mperature is increased. The position and width of the ground states are compared to analy tical effective field theory (EFT) predictions. Systematic uncertainties of the maximu m entropy method (MEM), used to construct the spectral functions, are discussed in s ome detail.

    Item Type: Article
    Keywords: Lattice QCD; Thermal Field Theory;
    Academic Unit: Faculty of Science and Engineering > Mathematical Physics
    Item ID: 4825
    Identification Number: https://doi.org/10.1007/JHEP11(2011)103
    Depositing User: Dr. Jonivar Skullerud
    Date Deposited: 12 Mar 2014 17:56
    Journal or Publication Title: Journal of High Energy Physics
    Publisher: Institute of Physics
    Refereed: Yes
    URI:

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