Search for lepton-number violating processes in B+ → h−l+l+ decays
We have searched for the lepton-number violating processes B + → h − ℓ + ℓ + with h − = K − / π − and ℓ + = e + / μ + , using a sample of 471 ± 3 million B ¯¯¯ B events collected with the BABAR detector at the PEP-II e + e − collider at the SLAC National Accelerator Laboratory. We find no evidence f...
| 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:2445/130866 |
| Acceso en línea: | https://hdl.handle.net/2445/130866 |
| Access Level: | acceso abierto |
| Palabra clave: | Física de partícules Experiments Leptons (Física nuclear) Particle physics Leptons (Nuclear physics) |
| Sumario: | We have searched for the lepton-number violating processes B + → h − ℓ + ℓ + with h − = K − / π − and ℓ + = e + / μ + , using a sample of 471 ± 3 million B ¯¯¯ B events collected with the BABAR detector at the PEP-II e + e − collider at the SLAC National Accelerator Laboratory. We find no evidence for these decays and place 90%-confidence-level upper limits on their branching fractions B ( B + → π − e + e + ) < 2.3 × 10 − 8 , B ( B + → K − e + e + ) < 3.0 × 10 − 8 , B ( B + → π − μ + μ + ) < 10.7 × 10 − 8 , and B ( B + → K − μ + μ + ) < 6.7 × 10 − 8 . |
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