$f_B$ and $f_{B_s}$ using NRQCD

Details $f_B$ and $f_{B_s}$ using NRQCD $f_B$ and $f_{B_s}$ using NRQCD

1998-10-06

arxiv.org/abs/hep-lat/9810015v1

Nucl.Phys.Proc.Suppl. 73 (1999) 369-371

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages. Makefile and sources included. Talk presented at LATTICE98 (HEAVYQK)

Scientific paper

10.1016/S0920-5632(99)85076-2

This talk summarizes the quenched calculation of $f_B$ and $f_{B_s}$ presented in hep-lat/9801038. The heavy quark is simulated using an $O(1/M^2)$ improved NRQCD action, and the tadpole improved clover action is used for the light quarks. The axial current includes the $O(1/M)$ corrections in one-loop perturbation theory and the $O(1/M^2)$ ones at tree-level. We discuss the various systematic effects and consistency checks made in the calculation.

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