Charmless Hadronic B Decays to Exclusive Final States with a $K^{*},\rho,\omega$, or $\phi$ Meson

TL;DR

This paper reports on the search for charmless B-meson decays involving specific mesons, presenting new observations, evidence, and limits based on data from the CLEO detector, advancing understanding of rare decay processes.

Contribution

First observation of B+ -> omega pi+ decay and evidence for B0 -> omega K0, with updated limits on other charmless decay modes, using the full CLEO dataset.

Findings

Observation of B+ -> omega pi+ with a branching fraction of (11.3^{+3.3}_{-2.9} ext{(stat)} ext{+1.5}_{-1.5} ext{(sys)}) imes 10^{-6}

Evidence for B0 -> omega K0 decay

Set limits on B0 -> rho0 pi0 and B0 -> K*0 pi0 decays

Abstract

We present results of searches for B-meson decays to charmless final states that include a K*, rho, omega, or phi meson accompanied by a second meson. Using the entire data sample of 9.7 million BBbar pairs collected with the CLEO II and CLEO II.V detectors, we observe a signal for the decay B+ -> omega pi+, and measure a branching fraction of B(B+ -> omega pi+) = (11.3^{+3.3}_{-2.9} \pm 1.5) \times 10^{-6}. We also see evidence for the decay B0 -> omega K0, and set limits for the decays B0 -> rho0 pi0 and B0 -> K*0 pi0. In addition to these new results, we also summarize previous CLEO results on related channels. All quoted results are preliminary.