High-precision lattice QCD confronts experiment

Davies, C.T.H. et al. (2004) High-precision lattice QCD confronts experiment. Physical Review Letters, 92(2), art 022001. (doi: 10.1103/PhysRevLett.92.022001)

Abstract

The recently developed Symanzik-improved staggered-quark discretization allows unquenched lattice-QCD simulations with much smaller (and more realistic) quark masses than previously possible. To test this formalism, we compare experiment with a variety of nonperturbative calculations in QCD drawn from a restricted set of "gold-plated" quantities. We find agreement to within statistical and systematic errors of 3% or less. We discuss the implications for phenomenology and, in particular, for heavy-quark physics.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Follana, Dr Eduardo and Gregory, Dr Eric and Shigemitsu, Prof Junko and Davies, Professor Christine
• Authors: Davies, C.T.H., Follana, E., Gray, A., Lepage, G.P., Mason, Q., Nobes, M., Shigemitsu, J., Trottier, H.D., Wingate, M., Aubin, C., Bernard, C., Burch, T., Detar, C., Gottlieb, S., Gregory, E.B., Heller, U.M., Hetrick, J.E., Osborn, J., Sugar, R., Toussaint, D., Di Pierro, M., El Khadra, A., Kronfeld, A.S., Mackenzie, P.B., Menscher, D., and Simone, J.
• Subjects: Q Science > QC Physics
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Physical Review Letters
• Publisher: American Physical Society
• ISSN: 0031-9007
• ISSN (Online): 1079-7114