We present measurements of branching fractions and charge asymmetries for the decays B→ηK*, where K* indicates a spin 0, 1, or 2 Kπ system. The data sample corresponds to 344×106 BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider at SLAC. We measure the branching fractions (in units of 10-6): B(B0→ηK*0(892))=16.5±1.1±0.8, B(B+→η K*+(892))=18.9±1.8±1.3, B(B0→η(Kπ)0*0)=11. 0±1.6±1.5, B(B+→η(Kπ)0*+)=18.2±2. 6±2.6, B(B0→ηK2*0(1430))=9.6±1.8±1.1, and B(B+→ηK2*+(1430))=9.1±2.7±1.4. We also determine the charge asymmetries for all decay modes.

Aubert, B., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2006). Measurement of branching fractions and charge asymmetries in B decays to an η meson and a K* meson. PHYSICAL REVIEW LETTERS, 97(20) [10.1103/PhysRevLett.97.201802].

Measurement of branching fractions and charge asymmetries in B decays to an η meson and a K* meson

Carpinelli M.;
2006

Abstract

We present measurements of branching fractions and charge asymmetries for the decays B→ηK*, where K* indicates a spin 0, 1, or 2 Kπ system. The data sample corresponds to 344×106 BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider at SLAC. We measure the branching fractions (in units of 10-6): B(B0→ηK*0(892))=16.5±1.1±0.8, B(B+→η K*+(892))=18.9±1.8±1.3, B(B0→η(Kπ)0*0)=11. 0±1.6±1.5, B(B+→η(Kπ)0*+)=18.2±2. 6±2.6, B(B0→ηK2*0(1430))=9.6±1.8±1.1, and B(B+→ηK2*+(1430))=9.1±2.7±1.4. We also determine the charge asymmetries for all decay modes.
Articolo in rivista - Articolo scientifico
BABAR detector
English
2006
97
20
201802
none
Aubert, B., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2006). Measurement of branching fractions and charge asymmetries in B decays to an η meson and a K* meson. PHYSICAL REVIEW LETTERS, 97(20) [10.1103/PhysRevLett.97.201802].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389781
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