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Status and prospect for determining $f_B$, $f_{B_s}$, $f_{B_s} / f_B$ on the lattice

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arxiv hep-ph/9503336 v1 pith:VFAHOHJR submitted 1995-03-15 hep-ph hep-lat

The MILC Collaboration: C. Bernard , T. Blum , A. De , T. DeGrand , C. DeTar , Steven Gottlieb , Urs M. Heller , N. Ishizuka
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L. Kärkkäinen J. Labrenz K. Rummukainen A. Soni R. Sugar D. Toussaint
This is my paper
classification hep-phhep-lat
keywords errorsquarksquenchingwilsonapproximationattemptbetacollaboration
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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 $\beta=6.3$, 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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