Study of Charmless Hadronic B Meson Decays to Pseudoscalar-Vector Final States

TL;DR

This paper reports the first observation of specific charmless hadronic B meson decays to pseudoscalar-vector final states, measuring their branching fractions using data from the CLEO detector, advancing understanding of b to u transitions.

Contribution

It presents the first experimental observation and measurement of branching fractions for several charmless B meson decays to pseudoscalar-vector states, using data from the CLEO detector.

Findings

First observation of B^- --> Pi^-Rho^0 decay

First observation of B^0 --> Pi^+-Rho^-+ decay

First observation of B^- --> Pi^-Omega decay

Abstract

We report results of searches for charmless hadronic B meson decays to pseudoscalar(pi^+-,K^+-,Pi^0 or Ks^0)-vector(Rho, K* or Omega) final states. Using 9.7 million BBbar pairs collected with the CLEO detector, we report first observation of B^- --> Pi^-Rho^0, B^0 --> Pi^+-Rho^-+ and B^- --> Pi^-Omega, which are expected to be dominated by hadronic b --> u transitions. The measured branching fractions are (10.4+3.3-3.4+-2.1)x10^-6, (27.6+8.4-7.4+-4.2)x10^-6 and (11.3+3.3-2.9+-1.4)x10^-6, respectively. Branching fraction upper limits are set for all the other decay modes investigated.