Search for B+ → X(3872)K+, X(3872) → J/ψγ
In a study of B + → J / ψ γ K + decays, we find evidence for the radiative decay X ( 3872 ) → J / ψ γ with a statistical significance of 3.4 σ . We measure the product of branching fractions B ( B + → X ( 3872 ) K + ) ⋅ B ( X ( 3872 ) → J / ψ γ ) = ( 3.3 ± 1.0 ± 0.3 ) × 10 − 6 , where the uncertaint...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2006 |
| 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:2445/131415 |
| Acceso en línea: | https://hdl.handle.net/2445/131415 |
| Access Level: | acceso abierto |
| Palabra clave: | Física de partícules Experiments Particle physics |
| Sumario: | In a study of B + → J / ψ γ K + decays, we find evidence for the radiative decay X ( 3872 ) → J / ψ γ with a statistical significance of 3.4 σ . We measure the product of branching fractions B ( B + → X ( 3872 ) K + ) ⋅ B ( X ( 3872 ) → J / ψ γ ) = ( 3.3 ± 1.0 ± 0.3 ) × 10 − 6 , where the uncertainties are statistical and systematic, respectively. We also measure the branching fraction B ( B + → χ c 1 K + ) = ( 4.9 ± 0.2 ± 0.4 ) × 10 − 4 . These results are obtained from ( 287 ± 3 ) million B ¯¯¯ B decays collected at the Υ ( 4 S ) resonance with the BABAR detector at the PEP-II B Factory at SLAC. |
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