Observation of $B^{+}\to \omega K^{+}$ and Search for Related $B$ Decay Modes

Abstract

We have searched for two-body charmless decays of B mesons to purely hadronic exclusive final states including $\omega$ or $\varphi$ mesons using data collected with the CLEO II detector. With this sample of $6.6\times 10^6$ B mesons we observe a signal for the $\omega K^{+}$ final state, and measure a branching fraction of B($B^{+}\to \omega K^{+}$) = 1.5 +0.7 -0.6 +-0.2 $\times 10^{-5}$. We also observe some evidence for the $\varphi K^{\ast }$ final state, and upper limits are given for 22 other decay modes. These results provide the opportunity for studies of theoretical models and physical parameters.

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

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