Observation of B0ωK0, B+ηπ+, and B+ηK+ and Study of Related Decays

B. Aubert et al. (BABAR Collaboration)
Phys. Rev. Lett. 92, 061801 – Published 10 February 2004

Abstract

We present measurements of branching fractions and charge asymmetries for seven B-meson decays with an η, η, or ω meson in the final state. The data sample corresponds to 89×106 BB¯ pairs produced from e+e annihilation at the Υ(4S) resonance. We measure the following branching fractions in units of 106: B(B+ηπ+)=5.3±1.0±0.3, B(B+ηK+)=3.4±0.8±0.2, B(B0ηK0)=2.9±1.0±0.2 (<5.2, 90% C.L.), B(B+ηπ+)=2.7±1.2±0.3 (<4.5, 90% C.L.), B(B+ωπ+)=5.5±0.9±0.5, B(B+ωK+)=4.8±0.8±0.4, and B(B0ωK0)=5.91.3+1.6±0.5. The charge asymmetries are Ach(B+ηπ+)=0.44±0.18±0.01, Ach(B+ηK+)=0.52±0.24±0.01, Ach(B+ωπ+)=0.03±0.16±0.01, and Ach(B+ωK+)=0.09±0.17±0.01.

  • Figure
  • Figure
  • Received 7 November 2003

DOI:https://doi.org/10.1103/PhysRevLett.92.061801

©2004 American Physical Society

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Vol. 92, Iss. 6 — 13 February 2004

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