Searches for B0(s) →J/ψpp¯¯¯ and B + → J/ψ p p¯¯¯ π + decays
The results of searches for B0(s)→J/ψ pp¯¯¯ and B + → J/ψ p p¯¯¯π+ decays are reported. The analysis is based on a data sample, corresponding to an integrated luminosity of 1.0 fb−1 of pp collisions, collected with the LHCb detector. An excess with 2.8 σ significance is seen for the decay B0s→J/ψ pp...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2013 |
| 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:20.500.14342/3141 |
| Acceso en línea: | http://hdl.handle.net/20.500.14342/3141 https://doi.org/10.1007/JHEP09(2013)006 |
| Access Level: | acceso abierto |
| Palabra clave: | Gran col·lisionador d'hadrons (França i Suïssa) Partícules (Física nuclear) Col·lisions (Física nuclear) 539 |
| Sumario: | The results of searches for B0(s)→J/ψ pp¯¯¯ and B + → J/ψ p p¯¯¯π+ decays are reported. The analysis is based on a data sample, corresponding to an integrated luminosity of 1.0 fb−1 of pp collisions, collected with the LHCb detector. An excess with 2.8 σ significance is seen for the decay B0s→J/ψ pp¯¯¯ and an upper limit on the branching fraction is set at the 90 % confidence level: B(B0s→J/ψ pp¯¯¯) < 4.8 × 10−6, which is the first such limit. No significant signals are seen for B 0 → J/ψ p p¯¯¯ and B + → J/ψ p p¯¯¯ π + decays, for which the corresponding limits are set: B(B0→J/ψ pp¯¯¯) < 5.2 × 10−7, which significantly improves the existing limit; and B(B+→J/ψ pp¯¯¯π+) < 5.0 × 10−7, which is the first limit on this branching fraction. |
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