Resonances and CP violation in Bs0and B¯s0→J/ψK+K−decays in the mass region above the ϕ(1020)
: The decays of B0 s and B 0 s mesons into the J/ψK+K− final state are studied in the K+K− mass region above the φ(1020) meson in order to determine the resonant substructure and measure the CP-violating phase, φs, the decay width, Γs, and the width difference between light and heavy mass eigenstate...
| Autores: | , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| 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:2445/186567 |
| Acceso en línea: | https://hdl.handle.net/2445/186567 |
| Access Level: | acceso abierto |
| Palabra clave: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Large Hadron Collider (France and Switzerland) Particle physics |
| Sumario: | : The decays of B0 s and B 0 s mesons into the J/ψK+K− final state are studied in the K+K− mass region above the φ(1020) meson in order to determine the resonant substructure and measure the CP-violating phase, φs, the decay width, Γs, and the width difference between light and heavy mass eigenstates, ∆Γs. A decay-time dependent amplitude analysis is employed. The data sample corresponds to an integrated luminosity of 3 fb−1 produced in 7 and 8 TeV pp collisions at the LHC, collected by the LHCb experiment. The measurement determines φs = 119 ± 107 ± 34 mrad. A combination with previous LHCb measurements using similar decays into the J/ψπ+π − and J/ψφ(1020) final states gives φs = 1 ± 37 mrad, consistent with the Standard Model prediction |
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