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

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

1997-11-19

arxiv.org/abs/hep-lat/9711043v1

Nucl.Phys.Proc.Suppl.63:356-358,1998

Physics

High Energy Physics

High Energy Physics - Lattice

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

Scientific paper

10.1016/S0920-5632(97)00768-8

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 $f_B=163 \pm 16 MeV$ and $f_{B_s}=175 \pm 18 MeV$ with the Clover action.

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