High-Precision Lattice QCD Confronts Experiment
| Autor: | Aida X. El-Khadra, Urs M. Heller, Paul B. Mackenzie, Robert L. Sugar, M. Nobes, T. Burch, James N. Simone, Christopher Alan Aubin, Eric Brittain Gregory, James Edward Hetrick, D. Menscher, Howard D. Trottier, Carleton DeTar, Q. Mason, G. P. Lepage, Junko Shigemitsu, Andreas S. Kronfeld, Christine Davies, Matthew Wingate, E. Follana, Alan Gray, Claude Bernard, Steven Gottlieb, M. Di Pierro, Doug Toussaint, James C. Osborn |
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| Rok vydání: | 2004 |
| Předmět: |
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Quark Quantum chromodynamics Physics Particle physics Discretization High Energy Physics::Lattice High Energy Physics - Lattice (hep-lat) High Energy Physics::Phenomenology FOS: Physical sciences General Physics and Astronomy Lattice QCD High Energy Physics - Phenomenology High Energy Physics - Lattice High Energy Physics - Phenomenology (hep-ph) Lattice gauge theory High Energy Physics::Experiment Vacuum polarization Phenomenology (particle physics) QC |
| Zdroj: | Scopus-Elsevier T. H. Davies, C, Follana, E, Gray, A, P. Lepage, G, Mason, Q, Nobes, M, Shigemitsu, J, D. Trottier, H, Wingate, M, Aubin, C, Bernard, C, Burch, T, DeTar, C, Gottlieb, S, B. Gregory, E, M. Heller, U, E. Hetrick, J, Osborn, J, Sugar, R, Toussaint, D, Di Pierro, M, El-Khadra, A, S. Kronfeld, A, B. Mackenzie, P, Menscher, D & Simone, J 2003, ' High-Precision Lattice QCD Confronts Experiment ', Physical Review Letters, vol. 92, no. 2 . https://doi.org/10.1103/PhysRevLett.92.022001 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.92.022001 |
| Popis: | We argue that high-precision lattice QCD is now possible, for the first time, because of a new improved staggered quark discretization. We compare a wide variety of nonperturbative calculations in QCD with experiment, and find agreement to within statistical and systematic errors of 3% or less. We also present a new determination of alpha_msbar(Mz); we obtain 0.121(3). We discuss the implications of this breakthrough for phenomenology and, in particular, for heavy-quark physics. Comment: 2 figures, revtex |
| Databáze: | OpenAIRE |
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