First Observation of the Cabibbo Suppressed Decay B⁺ → D̅⁰K⁺

Authors

M. Athanas, University of Florida - Gainesville
Kenneth A. Bloom, University of Nebraska-LincolnFollow
CLEO Collaboration

Date of this Version

6-22-1998

Comments

Published by American Physical Society. Phys. Rev. Lett. 80, 5493 (1998). http://prl.aps.org. Copyright © 1998 American Physical Society. Permission to use.

Abstract

We have observed the decay B⁺ → D̅⁰K⁺, using 3.3 X 10⁶ BB̅ pairs collected with the CLEO II detector at the Cornell Electron Storage Ring. We find the ratio of branching fractions R ≡ Ɓ(B⁺ → D̅⁰K⁺)/Ɓ(B⁺ →D̅⁰π⁺) = 0.055 ± 0.014 ± 0.005.