Search for B→K∗ν¯ν decays
We present a search for the decays B → K ∗ ν ¯ ν using 454 × 10 6 B ¯¯¯ B pairs collected at the Υ ( 4 S ) resonance with the BABAR detector at the SLAC PEP-II B -Factory. We first select an event sample where one B is reconstructed in a semileptonic or hadronic mode with one charmed meson. The rema...
| Autores: | , , |
|---|---|
| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2008 |
| 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:2445/131492 |
| Acesso em linha: | https://hdl.handle.net/2445/131492 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Física de partícules Experiments Particle physics |
| Resumo: | We present a search for the decays B → K ∗ ν ¯ ν using 454 × 10 6 B ¯¯¯ B pairs collected at the Υ ( 4 S ) resonance with the BABAR detector at the SLAC PEP-II B -Factory. We first select an event sample where one B is reconstructed in a semileptonic or hadronic mode with one charmed meson. The remaining particles in the event are then examined to search for a B → K ∗ ν ¯ ν decay. The charged K ∗ is reconstructed as K * + → K 0 S π + or K * + → K + π 0 ; the neutral K ∗ is identified in K * 0 → K + π − mode. We establish upper limits at 90% confidence level of B ( B + → K * + ν ¯ ν ) < 8 × 10 − 5 , B ( B 0 → K * 0 ν ¯ ν ) < 12 × 10 − 5 , and B ( B → K ∗ ν ¯ ν ) < 8 × 10 − 5 . |
|---|