Abstract
We report a measurement of the inclusive electron energy spectrum for charmed semileptonic decays of mesons in a data sample collected at the resonance with the Belle detector at the KEKB asymmetric energy collider. We determine the first four moments of the electron energy spectrum for threshold values of the electron energy between 0.4 and 2.0 GeV. In addition, we provide values of the partial branching fraction (zeroth moment) for the same electron threshold energies, and independent measurements of the and partial branching fractions at 0.4 GeV and 0.6 GeV electron threshold energies. We measure the independent and partial branching fractions with electron threshold energies of 0.4 GeV to be and . Full correlations between all measurements are evaluated.
- Received 5 October 2006
DOI:https://doi.org/10.1103/PhysRevD.75.032001
©2007 American Physical Society