Davies, C. et al. (2003) The determination of alpha s from lattice QCD with 2+1 flavors of dynamical quarks. Nuclear Physics, Section B, Proceedings Supplements, 119, 595 -597. (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 first lattice determination of the strong coupling constant with 3 flavors of dynamical quarks. The method follows previous analyses in using a perturbative expansion for the plaquette and Upsilon spectroscopy to set the scale. Using dynamical configurations from the MILC collaboration with 2+1 flavors of dynamical quarks we are able to avoid previous problems of having to extrapolate to 3 light flavors from 0 and 2. Our result agrees with our previous work: alpha /sub theta //sup MS/(Mz) = 0.121(3).
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Follana, Dr Eduardo and Shigemitsu, Prof Junko and Davies, Professor Christine |
Authors: | Davies, C., Gray, A., Alford, M., Follana, E., Hein, J., Lepage, 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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