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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
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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 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.

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MILC Collaboration, C. Bernard, S. Datta, C. DeTar, Steven Gottlieb, E. B. Gregory, U. M. Heller, J. Osborn, R. L. Sugar, D. Toussaint. 2004-10-11. Heavy-light decay constants using clover valence quarks and three flavors of dynamical improved staggered quarks. https://doi.org/10.1016/j.nuclphysbps.2004.11.318

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