Aarts, Gert and Allton, Chris and Harris, T. and Kim, S. and Lombardo, M. P. and Ryan, S. M. and Skullerud, Jon-Ivar (2014) The bottomonium spectrum at finite temperature from Nf = 2 + 1 lattice QCD. Journal of High Energy Physics, 1407. ISSN 1029-8479

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Abstract

We present results on the bottomonium spectrum at temperatures above and below the deconfinement crossover temperature, Tc, from dynamical lattice QCD simulations. The heavy quark is treated with a non-relativistic effective field theory on the lattice and serves as a probe of the hot medium. Ensembles with a finer spatial lattice spacing and a greater range of temperatures below Tc than those previously employed by this collaboration are used. In addition, there are Nf = 2 + 1 flavours of Wilson clover quark in the sea with M� � 400MeV and we perform a more careful tuning of the bottom quark mass in this work. We calculate the spectral functions of S and P wave bottomonium states using the maximum entropy method and confirm earlier findings on the survival of the ground state S wave states up to at least 2Tc and the immediate dissociation of the P wave states above Tc.

Item Type:	Article
Keywords:	Lattice QCD; Thermal Field Theory;
Academic Unit:	Faculty of Science and Engineering > Mathematical Physics
Item ID:	5481
Identification Number:	https://doi.org/10.1007/JHEP07(2014)097
Depositing User:	Dr. Jonivar Skullerud
Date Deposited:	13 Oct 2014 13:49
Journal or Publication Title:	Journal of High Energy Physics
Publisher:	SISSA by Springer
Refereed:	Yes
Funders:	SCOAP3
URI:	Publisher

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