B meson decay constant with the Wilson and Clover heavy quark actions

Abstract

We present results of our quenched study of the B meson decay constant obtained with a parallel set of simulations with the Wilson and Clover actions at \beta=5.9, 6.1 and 6.3. Systematic errors associated with the large b-quark mass are analyzed within the Fermilab non-relativistic formalism. As our best estimate in the continuum limit we obtain $f_B=163\pm 16MeV$ and $f_{B_s}=175\pm 18MeV$ with the Clover action.

Comments: 3 pages, 3 figures, talk presented by S. Hashimoto at LATTICE97, Edinburgh, 22-26 July 1997