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Phys. Rev. Lett. 92, 061801 (2004) [7 pages]

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

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B. Aubert et al. BABAR Collaboration
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Received 7 November 2003; published 10 February 2004

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 BB̅ pairs produced from e+e- annihilation at the Υ(4S) resonance. We measure the following branching fractions in units of 10-6: 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)=5.9-1.3+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.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.061801
DOI:
10.1103/PhysRevLett.92.061801
PACS:
13.25.Hw, 11.30.Er, 12.15.Hh