$f_B$ quenched and unquenched

C. Bernard, T. Blum, A. De +12

Results for $f_B$, $f_{B_s}$, $f_D$, $f_{D_s}$, and their ratios are presented. High statistics quenched runs at $\beta =5.7$, $5.85$, $6.0$, and $6.3$, plus a run still in progress at…