High-Precision Lattice QCD Confronts Experiment
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.
- Publication:
-
Physical Review Letters
- Pub Date:
- January 2004
- DOI:
- 10.1103/PhysRevLett.92.022001
- arXiv:
- arXiv:hep-lat/0304004
- Bibcode:
- 2004PhRvL..92b2001D
- Keywords:
-
- 12.38.Aw;
- 11.15.Ha;
- 12.38.Gc;
- General properties of QCD;
- Lattice gauge theory;
- Lattice QCD calculations;
- High Energy Physics - Lattice;
- High Energy Physics - Phenomenology
- E-Print:
- 2 figures, revtex