Results on improved KS dynamical configurations: spectrum, decay constants, etc

Abstract

The MILC Collaboration has been producing ensembles of lattice configurations with three dynamical flavors for the past few years. There are now results for three lattice spacings for a variety of light and strange quark masses, ranging down to $m_l=0.1m_s$, where $m_s$ is the dynamical strange quark mass and $m_l$ is the common mass of the $u$ and $d$ quarks. Recently, the Fermilab, HPQCD, MILC and UKQCD collaborations have presented a summary of results obtained using these lattices. Compared with quenched results, these new calculations show great improvement in agreement with experiment. This talk addresses the technical improvements that make these calculations possible and provides additional details of calculations not presented in the initial summary. We demonstrate that a wide range of hadronic observables can now be calculated to 2--3% accuracy.

10 pages, 17 figures (16 in color), Lattice2003(plenary), Plenary talk presented at Lattice 2003, Tsukuba, Japan, July 15-19. Also presented at Lattice Hadron Physics workshop, Cairns, Australia, July 22-30, 2003

References in corpus (8)

• High-Precision Lattice QCD Confronts Experiment
• Pion and Kaon masses in Staggered Chiral Perturbation Theory
• Pseudoscalar Decay Constants in Staggered Chiral Perturbation Theory
• Topological susceptibility with the improved Asqtad action
• Staggered Chiral Perturbation Theory
• Pion and kaon physics with improved staggered quarks
• Excited States in Staggered Meson Propagators
• Progress Calculating Decay Constants with NRQCD and AsqTad Actions

Cited by in corpus (9)

• Light pseudoscalar decay constants, quark masses, and low energy constants from three-flavor lattice QCD
• Light hadrons with improved staggered quarks: approaching the continuum limit
• QCD Thermodynamics with Three Flavors of Improved Staggered Quarks
• First determination of the strange and light quark masses from full lattice QCD
• First Observation of a Upsilon(1D) State
• Infrared features of KS fermion and Wilson fermion in Lattice Landau Gauge QCD
• An estimate of the flavour singlet contributions to the hyperfine splitting in charmonium
• A lattice perspective of kaon phenomenology
• The XYZ's of c\bar{c}: Hints of Exotic New Mesons