## Abstract

We report a new measurement of the Cabibbo-Kobayashi-Maskawa parameter [Formula presented] made with a sample of [Formula presented] [Formula presented] events collected with the CLEO II detector. Using heavy quark theory, we combine the observed yield of leptons from semileptonic [Formula presented] decay in the end-point momentum interval [Formula presented] with recent CLEO II data on [Formula presented] to find [Formula presented], where the first two uncertainties are experimental and the last two are from theory.

Original language | English (US) |
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Pages (from-to) | 5 |

Number of pages | 1 |

Journal | Physical review letters |

Volume | 88 |

Issue number | 23 |

DOIs | |

State | Published - 2002 |