Conference Paper/Proceeding/Abstract 630 views

### Bottomonium spectrum at finite temperature

Harris, Tim, , Aarts, Gert, , Kim, Seyong, others, Gert Aarts

Volume: "LATTICE2013", Start page: 171

Swansea University Author:

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 $N_f=2+1$ Wilson clover fermions with tadpole-improvement a...

Full description

Published: 2013 http://inspirehep.net/record/1264271 https://cronfa.swan.ac.uk/Record/cronfa22568 No Tags, Be the first to tag this record!
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 $N_f=2+1$ 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 $\chi_{b1}$ ground state directly above the crossover temperature, $T_c$, while the S wave $\Upsilon$ ground state remains relatively unchanged up to temperatures of almost $2T_c$. This evidence supports earlier conclusions from our FASTSUM collaboration of the immediate dissociation of the P wave states above $T_c$ and the survival of the S wave ground states up to $2T_c$. @articleHarris:2013vfa, author = "Harris, Tim and Ryan, Sinéad M. and Aarts, Gert and Allton, Chris and Kim, Seyong and others", title = "Bottomonium spectrum at finite temperature", journal = "PoS", volume = "LATTICE2013", pages = "171", year = "2014", eprint = "1311.3208", archivePrefix = "arXiv", primaryClass = "hep-lat", SLACcitation = "%%CITATION = ARXIV:1311.3208;%%", Faculty of Science and Engineering 171