Heavy-light decay constants using clover valence quarks and three flavors of dynamical improved staggered quarks
MILC Collaboration, C. Bernard, S. Datta, C. DeTar, Steven Gottlieb, E. B. Gregory, U. M. Heller, J. Osborn, R. L. Sugar, D. Toussaint
Abstract
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 fB, fBs, fD and fDs can, in principle, be calculated in MeV, in addition to decay-constant ratios that were calculated previously.
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