The bottomonium spectrum at finite temperature from \(N_f=2+1\) lattice QCD

We present results on the bottomonium spectrum at temperatures above and below the deconfinement crossover temperature, \(T_c\), 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. E...

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Bibliographic Details
Published in:arXiv.org 2014-02
Main Authors: Aarts, Gert, Allton, Chris, Harris, Tim, Kim, Seyong, Lombardo, Maria Paola, Ryan, Sinéad M, Jon-Ivar Skullerud
Format: Article
Language:English
Subjects:
Crossovers
Field theory
Flavor (particle physics)
Maximum entropy method
P waves
Quantum chromodynamics
Quarks
Relativistic theory
S waves
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Summary:We present results on the bottomonium spectrum at temperatures above and below the deconfinement crossover temperature, \(T_c\), 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 \(T_c\) than those previously employed by this collaboration are used. In addition, there are \(N_f=2+1\) flavours of Wilson clover quark in the sea with \(M_\pi\approx400\) 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 \(2T_c\) and the immediate dissociation of the P wave states above \(T_c\).
ISSN:2331-8422
DOI:10.48550/arxiv.1402.6210