Observation of Exclusive Two-Body B Decays to Kaons and Pions

Abstract

We have studied two-body charmless hadronic decays of B mesons into the final states $\pi \pi$, $K\pi$, and $KK$. Using 3.3 million $B\bar{B}$ pairs collected with the CLEO-II detector, we have made the first observation of the decays $B^0\to K^{+}{\pi }^{-}$, $B^{+}\to K^0{\pi }^{+}$, and the sum of $B^{+}\to {\pi }^{+}{\pi }^0$ and $B^{+}\to K^{+}{\pi }^0$ decays (an average over charge-conjugate states is always implied). We place upper limits on branching fractions for the remaining decay modes.

9 page postscript file, postscript file also available through http://w4.lns.cornell.edu/public/CLNS

References in corpus (2)

• Constraining the CKM angle $\gamma$ and penguin contributions through combined $B\to \pi K$ branching ratios
• Exclusive nonleptonic decays of B mesons

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