Preliminary heavy-light decay constants from the MILC collaboration

C. Bernard; T. Blum; A. De; T. DeGrand; C. DeTar; Steven Gottlieb; U. M. Heller; N. Ishizuka; L. KÃ¤rkkÃ¤inen; J. Labrenz; A. Soni; R. Sugar; D. Toussaint

doi:10.1016/0920-5632(95)00258-B

paper

Preliminary heavy-light decay constants from the MILC collaboration

arXiv:hep-lat/9411080 · doi:10.1016/0920-5632(95)00258-B

Abstract

Preliminary results from the MILC collaboration for $f_{B}$ , $f_{B_{s}}$ , $f_{D}$ , $f_{D_{s}}$ and their ratios are presented. We compute in the quenched approximation at $I^^{2} = 6.3$ , 6.0 and 5.7 with Wilson light quarks and static and Wilson heavy quarks. We attempt to quantify systematic errors due to finite volume, finite lattice spacing, large $am$ , and fitting and extrapolation uncertainties. The hopping parameter approach of Henty and Kenway is used to treat the heavy quarks; the sources are Coulomb gauge gaussians.

3 pages, compressed postscript (uufiles), talk given at Lattice '94