The Upsilon spectrum from lattice QCD with 2+1 flavors of dynamical quarks

Gray, A. et al. (2003) The Upsilon spectrum from lattice QCD with 2+1 flavors of dynamical quarks. Nuclear Physics, Section B, Proceedings Supplements, 119, 592 -594. (doi: 10.1016/S0920-5632(03)01631-1)

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Publisher's URL: http://dx.doi.org/10.1016/S0920-5632(03)01631-1

Abstract

We describe the bottomonium spectrum obtained on the MILC configurations which incorporate 2+1 flavors of dynamical quarks. We compare to quenched and 2 flavor results also on MILC configurations. We show that the lattice spacing determination using different quantities shows clear signs of convergence with 2+1 flavors and give results for the leptonic width and hyperfine splitting, in the form of the ratio of the 1st excited state of the Upsilon to that of the ground state.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Follana, Dr Eduardo and Shigemitsu, Prof Junko and Davies, Professor Christine
Authors: Gray, A., Davies, C., Alford, M., Follana, E.,, Hein, J., Lepage, G.P., Mason, Q., Nobes, M., Shigemitsu, J., Trottier, H., and Wingate, M.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Nuclear Physics, Section B, Proceedings Supplements
Publisher:Elsevier BV
ISSN:0920-5632
ISSN (Online):1873-3832

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