Measurement of B→K∗(892)γ branching fractions and CP and isospin asymmetry
We present an analysis of the decays B0→K*0(892)γ and B+→K*+(892)γ using a sample of about 383×106 B¯¯¯B events collected with the BABAR detector at the PEP-II symmetric energy B factory. We measure the branching fractions B(B0→K*0γ)=(4.47±0.10±0.16)×1− 5 and B (B+→K*+γ)=(4.22±0.14±0.16)×10−5. We co...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2009 |
| País: | España |
| Institución: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/125030 |
| Acceso en línea: | https://hdl.handle.net/2445/125030 |
| Access Level: | acceso abierto |
| Palabra clave: | Partícules (Física nuclear) Simetria (Física) Particles (Nuclear physics) Symmetry (Physics) |
| Sumario: | We present an analysis of the decays B0→K*0(892)γ and B+→K*+(892)γ using a sample of about 383×106 B¯¯¯B events collected with the BABAR detector at the PEP-II symmetric energy B factory. We measure the branching fractions B(B0→K*0γ)=(4.47±0.10±0.16)×1− 5 and B (B+→K*+γ)=(4.22±0.14±0.16)×10−5. We constrain the direct CP asymmetry to be −0.033<A(B→K∗γ)<0.028 and the isospin asymmetry to be 0.017<Δ0−<0.116, where the limits are determined by the 90% confidence interval and include both the statistical and systematic uncertainties. |
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