Various exclusive and inclusive decays of $B$ mesons have been studied using data taken with the CLEO detector at the Cornell Electron Storage Ring. The exclusive modes examined are mostly decays into two hadrons. The branching ratio for a $B$ meson to decay into a charmed meson and a charged pion is found to be about 2%. Upper limits are quoted for other final states $\psi K^{-}$, ${\pi }^{+}{\pi }^{-}$, ${\rho }^0{\pi }^{-}$, ${\mu }^{+}{\mu }^{-}$, $e^{+}{e}^{-}$, and ${\mu }^{\pm }{e}^{\mp }$. We also give an upper limit on inclusive $\psi$ production and improved charged multiplicity measurements.

• Received 8 June 1984

DOI:https://doi.org/10.1103/PhysRevD.30.2279