Status and prospect for determining f_B, f_(B_s), f_(B_s) / f_B on the lattice
classification
✦ hep-ph
hep-lat
keywords
errorsquarksquenchingwilsonapproximationattemptbetacollaboration
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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 $\beta=6.3$, 6.0 and 5.7 with Wilson light quarks and static and Wilson heavy quarks. We attempt to quantify all systematic errors other than quenching, and have a first indication of the size of quenching errors.
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