标题： 确定格点上的$f_B$、$f_{B_s}$、$f_{B_s} / f_B$的现状与展望 显示英文标题

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

摘要： MILC合作组关于$f_B$、$f_{B_s}$、$f_D$、$f_{D_s}$及其比值的初步结果已给出。 我们在冻结近似下，在$\beta=6.3$、6.0和5.7处计算，使用威尔逊轻夸克和静态及威尔逊重夸克。 我们试图量化除冻结以外的所有系统误差，并对冻结误差的大小有了初步指示。 显示英文摘要

摘要： 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.