Phys. Rev. Lett. 92, 022001 (2004) [5 pages]

High-Precision Lattice QCD Confronts Experiment

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C. T. Davies et al. HPQCD and Fermilab Lattice Collaborations
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Received 7 April 2003; published 15 January 2004

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.


©2004 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.92.022001
DOI: 10.1103/PhysRevLett.92.022001
PACS: 12.38.Aw, 11.15.Ha, 12.38.Gc

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