Measurement of branching fractions and rate asymmetries in the rare decays B → K(*)ℓ+ℓ−
In a sample of 471 × 10 6 B ¯¯¯ B events collected with the BABAR detector at the PEP-II e + e − collider we study the rare decays B → K ( * ) ℓ + ℓ − , where ℓ + ℓ − is either e + e − or μ + μ − . We report results on partial branching fractions and isospin asymmetries in seven bins of dilepton mas...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| 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:2445/130845 |
| Acceso en línea: | https://hdl.handle.net/2445/130845 |
| Access Level: | acceso abierto |
| Palabra clave: | Física de partícules Experiments Leptons (Física nuclear) Particle physics Leptons (Nuclear physics) |
| Sumario: | In a sample of 471 × 10 6 B ¯¯¯ B events collected with the BABAR detector at the PEP-II e + e − collider we study the rare decays B → K ( * ) ℓ + ℓ − , where ℓ + ℓ − is either e + e − or μ + μ − . We report results on partial branching fractions and isospin asymmetries in seven bins of dilepton mass-squared. We further present C P and lepton-flavor asymmetries for dilepton masses below and above the J / ψ resonance. We find no evidence for C P or lepton-flavor violation. The partial branching fractions and isospin asymmetries are consistent with the Standard Model predictions and with results from other experiments. |
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