Quenched Lattice Results for $f_B$ and $f_D$

Details Quenched Lattice Results for $f_B$ and $f_D$ Quenched Lattice Results for $f_B$ and $f_D$

1992-11-18

arxiv.org/abs/hep-lat/9211048v2

Nucl.Phys.Proc.Suppl. 30 (1993) 465

Physics

High Energy Physics

High Energy Physics - Lattice

4 pages, LATTICE '92 contribution, UW/PT-92-21 (Revision fixes error in shar file.)

Scientific paper

10.1016/0920-5632(93)90251-Z

We have computed the decay constants for the $B$ and $D$ mesons, using quenched lattices at $\beta=6.3$, by interpolating between the static approximation of Eichten and the conventional (``heavy'' Wilson fermion) method. A more careful treatment of the static result using better sources with longer time-displacements and a modification to the Wilson quark normalization to correct approximately for lattice effects in the large-$am$ regime have led to the elimination of the large discrepancy between the two methods which had been previously observed. We report final results, with estimates of various systematic errors.

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