Measurement of B(D⁰ → K^-π⁺) Using Partial Reconstruction of B̅ → D*⁺Xℓ^- ν̅

Authors

M. Artuso, Syracuse University, Syracuse, New York
Kenneth A. Bloom, University of Nebraska-LincolnFollow
CLEO Collaboration

Date of this Version

4-13-1998

Comments

Published by American Physical Society. Phys. Rev. Lett. 80, 3193 (1998). http://prl.aps.org. Copyright © 1998 American Physical Society. Permission to use.

Abstract

We present a measurement of the absolute branching fraction for D⁰ → K^-π⁺ using the reconstruction of the decay chain B̅ → D*⁺Xℓ^- ν̅ where only the lepton and the low-momentum pion from the D*⁺ are detected. With data collected by the CLEO II detector at the Cornell Electron Storage Ring, we have determined Ɓ(D⁰ → K^-π⁺)= [3.81 ± 0.15(stat) ± 0.16(syst)]%.