Measurement of the Ξ−b and Ω−b baryon lifetimes
Using a data sample of pp collisions corresponding to an integrated luminosity of 3 fb−1, the Ξ−b and Ω−b baryons are reconstructed in the Ξ−b→J/ψΞ− and Ω−b→J/ψΩ− decay modes and their lifetimes measured to be τ(Ξ−b)=1.55+0.10−0.09 (stat)±0.03(syst) ps, τ(Ω−b)=1.54+0.26−0.21 (stat)±0.05(syst) ps. Th...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | Universitat Ramon Llull (URL) |
| Repositorio: | DAU Arxiu Digital de la Universitat Ramon Llull |
| OAI Identifier: | oai:dau.url.edu:20.500.14342/3217 |
| Acceso en línea: | http://hdl.handle.net/20.500.14342/3217 https://doi.org/10.1016/j.physletb.2014.06.064 |
| Access Level: | acceso abierto |
| Palabra clave: | Gran col·lisionador d'hadrons (França i Suïssa) Barions Partícules pesants (Física nuclear) Col·lisions (Física nuclear) 539 |
| Sumario: | Using a data sample of pp collisions corresponding to an integrated luminosity of 3 fb−1, the Ξ−b and Ω−b baryons are reconstructed in the Ξ−b→J/ψΞ− and Ω−b→J/ψΩ− decay modes and their lifetimes measured to be τ(Ξ−b)=1.55+0.10−0.09 (stat)±0.03(syst) ps, τ(Ω−b)=1.54+0.26−0.21 (stat)±0.05(syst) ps. These are the most precise determinations to date. Both measurements are in good agreement with previous experimental results and with theoretical predictions. |
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