Aarts, Gert and Allton, Chris and Kim, Seyong and Lombardo, M. P. and Oktay, M. B. and Ryan, S. M. and 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

Preview

Download (4MB) | Preview

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:	https://doi.org/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
URI:	Publisher
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

Repository Staff Only(login required)

Item control page

Downloads

Origin of downloads