Heavy-light decay constants with three dynamical flavors

Bernard, C.; Burch, T.; Datta, S.; DeGrand, T.; DeTar, C.; Gottlieb, Steven; Heller, Urs M.; Orginos, K.; Sugar, R.; Toussaint, D.

Heavy-light decay constants with three dynamical flavors

Authors

Description

We present preliminary results for the heavy-light leptonic decay constants in the presence of three light dynamical flavors. We generate dynamical configurations with improved staggered and gauge actions and analyze them for heavy-light physics with tadpole improved clover valence quarks. When the scale is set by $m_ρ$, we find an increase of approximately 23% in $f_B$ with three dynamical flavors over the quenched case. Discretization errors appear to be small (of order 3% or less) in the quenched case but have not yet been measured in the dynamical case.
contribution to Lattice2001(heavyquark); 3 pages, 3 postscript figures