Observation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="italic">B</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mo>→</mml:mo><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="italic">ω</mml:mi><mml:mi mathvariant="italic">K</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>and Search for Related<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">B</mml:mi></mml:math>Decays Modes

We have searched for two-body charmless decays of $B$ mesons to purely hadronic exclusive final states including $\ensuremath{\omega}$ or $\ensuremath{\varphi}$ mesons using data collected with the CLEO II detector. With this sample of $6.6\ifmmode\times\else\texttimes\fi{}{10}^{6}B$ mesons we observe a signal for the $\ensuremath{\omega}{K}^{+}$ final state, and measure a branching fraction of $B({B}^{+}\ensuremath{\rightarrow}\ensuremath{\omega}{K}^{+})\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}({1.5}_{\ensuremath{-}0.6}^{+0.7}\ifmmode\pm\else\textpm\fi{}0.2)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$. We also observe some evidence for the $\ensuremath{\varphi}{K}^{*}$ 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.