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) B (B) over bar pairs produced from e(+)e(-) annihilation at the Y(4S) resonance. We measure the following branching fractions in units of 10(-6): B(B+-->etapi(+))=5.3+/-1.0+/-0.3, B(B+-->etaK(+))=3.4+/-0.8+/-0.2, B(B-0-->etaK(0))=2.9+/-1.0+/-0.2 (<5.2, 90% C.L.), B(B+-->eta(')pi(+))=2.7+/-1.2+/-0.3 (<4.5, 90% C.L.), B(B+-->omegapi(+))=5.5+/-0.9+/-0.5, B(B+-->omegaK(+))=4.8+/-0.8+/-0.4, and B(B-0-->omegaK(0))=5.9(-1.3)(+1.6)+/-0.5. The charge asymmetries are A(ch)(B+-->etapi(+))=-0.44+/-0.18+/-0.01, A(ch)(B+-->etaK(+))=-0.52+/-0.24+/-0.01, A(ch)(B+-->omegapi(+))=0.03+/-0.16+/-0.01, and A(ch)(B+-->omegaK(+))=-0.09+/-0.17+/-0.01.

Observation of B-0 -> omega K-0, B+ -> eta pi(+), and B+ -> eta K+ and study of related decays

ANDREOTTI, Mirco;AZZOLINI, Virginia;CALABRESE, Roberto;CIBINETTO, Gianluigi;LUPPI, Eleonora;NEGRINI, Matteo;SARTI, Alessio;
2004

Abstract

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) B (B) over bar pairs produced from e(+)e(-) annihilation at the Y(4S) resonance. We measure the following branching fractions in units of 10(-6): B(B+-->etapi(+))=5.3+/-1.0+/-0.3, B(B+-->etaK(+))=3.4+/-0.8+/-0.2, B(B-0-->etaK(0))=2.9+/-1.0+/-0.2 (<5.2, 90% C.L.), B(B+-->eta(')pi(+))=2.7+/-1.2+/-0.3 (<4.5, 90% C.L.), B(B+-->omegapi(+))=5.5+/-0.9+/-0.5, B(B+-->omegaK(+))=4.8+/-0.8+/-0.4, and B(B-0-->omegaK(0))=5.9(-1.3)(+1.6)+/-0.5. The charge asymmetries are A(ch)(B+-->etapi(+))=-0.44+/-0.18+/-0.01, A(ch)(B+-->etaK(+))=-0.52+/-0.24+/-0.01, A(ch)(B+-->omegapi(+))=0.03+/-0.16+/-0.01, and A(ch)(B+-->omegaK(+))=-0.09+/-0.17+/-0.01.
2004
Aubert, B; Barate, R; Boutigny, D; Couderc, F; Gaillard, Jm; Hicheur, A; Karyotakis, Y; Lees, Jp; Tisserand, V; Zghiche, A; Palano, A; Pompili, A; Che...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1211544
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