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| Título: | Observation of Bs0→J/ψK*(892)0 and Bs0→J/ψKS0 decays |
Autor: | Aaltonen, T.; Álvarez González, B.; Casal, Bruno CSIC; Cuevas, Javier CSIC ORCID; Gómez, Gervasio CSIC ORCID ; Palencia, Enrique CSIC ORCID; Rodrigo, Teresa CSIC ORCID ; Ruiz Jimeno, Alberto CSIC ORCID ; Scodellaro, Luca CSIC ORCID ; Vila, Iván CSIC ORCID; Vilar Cortabitarte, R. CSIC ORCID; Vizán, J. CSIC ORCID | Fecha de publicación: | mar-2011 | Editor: | American Physical Society | Citación: | Physical Review D 83(5): 052012 (2011) | Resumen: | We report the first observation of two Cabibbo-suppressed decay modes of the Bs0 meson. Using a sample of pp̅ collisions at √s=1.96 TeV corresponding to 5.9 fb-1 of integrated luminosity collected with the CDF II, the collider detector at the Fermilab Tevatron, we search for new Bs0 decay modes in a sample of events containing J/ψ→μ+μ- decays. We reconstruct a Bs0→J/ψK*(892)0 signal with K*(892)0→K+π-, observing a yield of 151±25 events with a statistical significance of 8.0σ. We also reconstruct a Bs0→J/ψKS0 signal with KS0→π+π-, observing a yield of 64±14 events with a statistical significance of 7.2σ. From these yields, we extract the branching ratios B(Bs0→J/ψK*(892)0)=(8.3±3.8)×10-5 and B(Bs0→J/ψK0)=(3.5±0.8)×10-5, where statistical, systematic, and fragmentation-fraction uncertainties are included in the combined uncertainty. | Descripción: | 11 páginas, 4 tablas, 3 tablas.-- PACS numbers: 14.40.Nd, 12.15.Ff, 12.15.Hh, 13.25.Hw.-- CDF Collaboration: et al. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevD.83.052012 | URI: | http://hdl.handle.net/10261/46365 | DOI: | 10.1103/PhysRevD.83.052012 | ISSN: | 1550-7998 | E-ISSN: | 1550-2368 |
| Aparece en las colecciones: | (IFCA) Artículos |
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| e052012.pdf | 287,28 kB | Adobe PDF |  Visualizar/Abrir |
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