Charmless B decays from CLEO: Rare and not-so-rare

Abstract

We present updated results from the CLEO collaboration from two studies of B meson decay to charmless hadronic final states. In the first analysis, we combine data from the CLEO II and CLEO III detectors to provide final measurements of thirteen two-body decay modes. In the second, the combined CLEO II and CLEO II.V data set is used to determine the $\eta'$ momentum spectrum and branching ratio in the inclusive process $B\to \eta' X_{nc}$ ; with a more powerful analysis technique than was previously used. For the momentum range $2.0<P_{\eta'}< 2.7$ GeV/c , we find a branching ratio, ${\cal B}(B \to \eta'X_{nc})$ , of [4.6± 1.1± 0.4± 0.5] × 10–4. The uncertainties are statistical, systematic, and due to subtraction of charm-decay background, respectively. PACS: 13.25.Hw Decays of Bottom Mesons