Measurement of the Overline Beta Dl Overline nv Partial Width and Form Factor Parameters

摘要

We have studied the decay B yields Dlv, where l= e or micro. From a fit to the differential decay rate d gamma /dw we measure the rate normalization FD(1) straight line Vcb straight line and form factor slope p(sup 2)(sub D) , and, using measured values of gamma B, find Gamma(B yield Dlv) = (12.0 plus or minus 0.9 plus or minus 2.1) ns to the minus 1 power.