Observation of Bs0→χϕ decay and study of B0→χK*0 decays
The first observation of the decay B0 s → χc1φ and a study of B0 → χc1,2K∗0 decays are presented. The analysis is performed using a dataset, corresponding to an integrated luminosity of 1.0 fb−1, collected by the LHCb experiment in pp collisions at a centre-of-mass energy of 7 TeV. The following rat...
| Autores: | , , , , , , , , , , , , , , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2013 |
| País: | España |
| Recursos: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositório: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/196730 |
| Acesso em linha: | https://hdl.handle.net/2445/196730 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Física de partícules Experiments Mesons (Física nuclear) Particle physics Mesons (Nuclear physics) |
| Resumo: | The first observation of the decay B0 s → χc1φ and a study of B0 → χc1,2K∗0 decays are presented. The analysis is performed using a dataset, corresponding to an integrated luminosity of 1.0 fb−1, collected by the LHCb experiment in pp collisions at a centre-of-mass energy of 7 TeV. The following ratios of branching fractions are measured: B(B0 s → χc1φ) B(B0 s → J/ψφ) = 18.9 ± 1.8 (stat) ± 1.3 (syst) ± 0.8(B) × 10−2, B(B0 → χc1K∗0) B(B0 → J/ψK∗0) = 19.8 ± 1.1 (stat) ± 1.2 (syst) ± 0.9(B) × 10−2, B(B0 → χc2K∗0) B(B0 → χc1K∗0) = 17.1 ± 5.0 (stat) ± 1.7 (syst) ± 1.1(B) × 10−2, where the third uncertainty is due to the limited knowledge of the branching fractions of χc → J/ψγ modes. © 2013 CERN. Published by Elsevier B.V. All rights reserved. |
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