Observation of B⁰ → ωK⁰, B⁺ → ηπ⁺, and B⁺ → ηK⁺ and study of related decays

B Aubert, Kelly Ford, Theresa Harrison, Christopher Hawkes, Sian Morgan, Alan Watson, Nigel Watson

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We present measurements of branching fractions and charge asymmetries for seven B-meson decays with an eta, eta', or omega meson in the final state. The data sample corresponds to 89x10(6) BB pairs produced from e(+)e(-) annihilation at the Upsilon(4S) resonance. We measure the following branching fractions in units of 10(-6): B(B+-->eta pi(+))=5.3+/-1.0+/-0.3, B(B+-->eta K+)=3.4+/-0.8+/-0.2, B(B0-->eta K0)=2.9+/-1.0+/-0.2 (eta(')pi(+))=2.7+/-1.2+/-0.3 (omega pi(+))=5.5+/-0.9+/-0.5, B(B+-->omega K+)=4.8+/-0.8+/-0.4, and B(B0-->omega K0)=5.9(+1.6)(-1.3)+/-0.5. The charge asymmetries are A(ch)(B+-->eta pi(+))=-0.44+/-0.18+/-0.01, A(ch)(B+-->eta K+)=-0.52+/-0.24+/-0.01, A(ch)(B+-->omega pi(+))=0.03+/-0.16+/-0.01, and A(ch)(B+-->omega K+)=-0.09+/-0.17+/-0.01.
Original languageEnglish
Pages (from-to)061801
Number of pages1
JournalPhysical Review Letters
Issue number6
Early online date1 Feb 2004
Publication statusPublished - 1 Feb 2004


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