Harris, Tim and Ryan, Sinead M and Aarts, Gert and Allton, Chris and Kim, Seyong and Lombardo, Maria Paola and Skullerud, Jon-Ivar (2013) Bottomonium spectrum at finite temperature. In: 31st International Symposium on Lattice Field Theory LATTICE 2013, July 29 – August 3, 2013, Mainz, Germany.

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Abstract

We investigate the modification of S and P wave states in the bottomonium spectrum above and below the deconfinement crossover temperature through their spectral functions obtained from the maximum entropy method. Anisotropic ensembles with Nf = 2+1 Wilson clover fermions with tadpole improvement are used while the bottom quark is treated with an improved non-relativistic action. We observe significant modifications of the P wave cb1 ground state directly above the crossover temperature, Tc, while the S wave ¡ ground state remains relatively unchanged up to temperatures of almost 2Tc. This evidence supports earlier conclusions from our FASTSUM collaboration of the immediate dissociation of the P wave states above Tc and the survival of the S wave ground states up to 2Tc.

Item Type:	Conference or Workshop Item (Paper)
Additional Information:	© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
Keywords:	Bottomonium spectrum; finite temperature;
Academic Unit:	Faculty of Science and Engineering > Mathematical Physics
Item ID:	6287
Depositing User:	Dr. Jonivar Skullerud
Date Deposited:	22 Jul 2015 17:26
Refereed:	Yes
URI:	http://pos.sissa.it/
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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