Abstract
We report a new measurement of the Cabibbo-Kobayashi-Maskawa parameter made with a sample of events collected with the CLEO II detector. Using heavy quark theory, we combine the observed yield of leptons from semileptonic decay in the end-point momentum interval with recent CLEO II data on to find , where the first two uncertainties are experimental and the last two are from theory.
- Received 8 February 2002
DOI:https://doi.org/10.1103/PhysRevLett.88.231803
©2002 American Physical Society