Aspects of determining fBs: scaling and power-law divergences

Details Aspects of determining fBs: scaling and power-law divergences Aspects of determining fBs: scaling and power-law divergences

1999-08-06

arxiv.org/abs/hep-lat/9908007v1

Nucl.Phys.Proc.Suppl. 83 (2000) 271-273

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages Latex, 2 postscript figuresq, contribution to Lattice'98, requires style file espcrc2.sty

Scientific paper

We present preliminary results for the decay constant of the Bs meson, fBs, at three values of beta=5.7, 6.0 and 6.2 using NRQCD and clover fermions for the heavy and light quarks respectively. As a consistency check the decay constant has also been extracted from the axial-vector current at finite momentum. In addition, we discuss the cancellation of O(alpha/(aM0)) terms and the remaining uncertainty in fBs from higher order divergences.

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