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

The MILC Collaboration, C. Bernard, T. Blum +12

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…