High-Precision Lattice QCD Confronts Experiment
High-Precision Lattice QCD Confronts Experiment
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 …