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28 March 2024
 
  » arxiv » hep-lat/0304004

 Article overview


High-Precision Lattice QCD Confronts Experiment
C. T. H. Davies ; E. Follana ; A. Gray ; G. P. Lepage ; Q. Mason ; M. Nobes ; J. Shigemitsu ; H. D. Trottier ; M. Wingate ; C. Aubin ; C. Bernard ; T. Burch ; C. DeTar ; Steven Gottlieb ; E. B. Gregory ; U. M. Heller ; J. E. Hetrick ; J. Osborn ; R. Sugar ; D. Toussaint ; M. Di Pierro ; A. El-Khadra ; A. S. Kronfeld ; P. B. Mackenzie ; D. Menscher ; J. Simone ;
Date 7 Apr 2003
Journal Phys.Rev.Lett. 92 (2004) 022001
Subject hep-lat hep-ph
AbstractWe 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.
Source arXiv, hep-lat/0304004
Other source [GID 569921] pmid14753930
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