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The bottomonium spectrum at finite temperature from N f = 2 + 1 lattice QCD / G. Aarts; C. Allton; T. Harris; S. Kim; M. P. Lombardo; S. M. Ryan; J.-I. Skullerud; Chris Allton; Gert Aarts

Journal of High Energy Physics, Volume: 07, Issue: 2014, Start page: 097

Swansea University Authors: Chris, Allton, Gert, Aarts

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DOI (Published version): 10.1007/JHEP07(2014)097

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. Ensemb...

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Published in: Journal of High Energy Physics
Published: 2014
Online Access: http://link.springer.com/article/10.1007%2FJHEP07%282014%29097
URI: https://cronfa.swan.ac.uk/Record/cronfa20489
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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 Mπ≈400 MeV 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.
College: College of Science
Issue: 2014
Start Page: 097