Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2004-10-11
Nucl.Phys.Proc.Suppl.140:449-451,2005
Physics
High Energy Physics
High Energy Physics - Lattice
Talk presented at Lattice2004(heavy), Fermilab, June 21-26, 2004; 3 pages, 3 color figures
Scientific paper
10.1016/j.nuclphysbps.2004.11.31
Starting in 2001, the MILC Collaboration began a large scale calculation of heavy-light meson decay constants using clover valence quarks on ensembles of three flavor configurations. For the coarse configurations, with a=0.12 fm, eight combinations of dynamical light and strange quarks have been analyzed. For the fine configurations, with a=0.09 fm, three combinations of quark masses are studied. Since we last reported on this calculation, statistics have been increased on the fine ensembles, and, more importantly, a preliminary value for the perturbative renormalization of the axial-vector current has become available. Thus, results for f_B, f_{B_s}, f_D and f_{D_s} can, in principle, be calculated in MeV, in addition to decay-constant ratios that were calculated previously.
Bernard Claude
Datta Saiti
DeTar Carleton
Gottlieb Steven
Gregory Eric B.
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