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Aarts, Gert, Allton, Chris, Kim, Seyong, Lombardo, M. P., Oktay, M. B., Ryan, S. M., Sinclair, D. K. and Skullerud, Jon-Ivar (2011) What happens to the Υ and η b in the quark-gluon plasma? Bottomonium spectral functions from lattice QCD. Journal of High Energy Physics, 11 (103). ISSN 1126-6708
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Abstract
We study bottomonium spectral functions in the quark-gluon
plasma in the Υ
and
η
b
channels, using lattice QCD simulations with two flavours of
light quark on highly
anisotropic lattices. The bottom quark is treated with nonr
elativistic QCD (NRQCD). In
the temperature range we consider, 0
.
42
≤
T/T
c
≤
2
.
09, we find that the ground states
survive, whereas the excited states are suppressed as the te
mperature is increased. The
position and width of the ground states are compared to analy
tical effective field theory
(EFT) predictions. Systematic uncertainties of the maximu
m entropy method (MEM),
used to construct the spectral functions, are discussed in s
ome detail.
| Item Type: | Article |
|---|---|
| Keywords: | Lattice QCD; Thermal Field Theory; |
| Academic Unit: | Faculty of Science and Engineering > Mathematical Physics |
| Item ID: | 4825 |
| Identification Number: | 10.1007/JHEP11(2011)103 |
| Depositing User: | Dr. Jonivar Skullerud |
| Date Deposited: | 12 Mar 2014 17:56 |
| Journal or Publication Title: | Journal of High Energy Physics |
| Publisher: | Institute of Physics |
| Refereed: | Yes |
| Related URLs: | |
| URI: | https://mural.maynoothuniversity.ie/id/eprint/4825 |
| 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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