Measurement of the Inclusive Semi-electronic $D^0$ Branching Fraction

CLEO Collaboration

Using the angular correlation between the ${\pi }^{+}$ emitted in a $D^{\ast +}\to D^0{\pi }^{+}$ decay and the $e^{+}$ emitted in the subsequent $D^0\to X{e}^{+}\nu$ decay, we have measu…