摘要: The decay constant of the B-meson, f(sub B), in a 100 by 20 by 40 lattice at beta= 6.0, with Wilson fermions, is computed using 30 gauge field configurations, generated in the quenched approximation. For the propagator of the b-qu... 展开 The decay constant of the B-meson, f(sub B), in a 100 by 20 by 40 lattice at beta= 6.0, with Wilson fermions, is computed using 30 gauge field configurations, generated in the quenched approximation. For the propagator of the b-quark only the leading term in the 1/m (sub b) expansion is kept. To improve our results, we use, as the interpolating fields for the B-meson, lattice operators which are 'smeared' over several lattice sites. A signal for the lightest B-meson state is 收起