Effective lifetime measurements in the B0s → K+K− , B0 → K+π− and B0s → π+K− decays
Measurements of the effective lifetimes in the B0s→K+K−, B0→K+π− and B0s→π+K− decays are presented using 1.0 fb−1 of pp collision data collected at a centre-of-mass energy of 7 TeV by the LHCb experiment. The analysis uses a data-driven approach to correct for the decay time acceptance. The measured...
| 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:20.500.14342/3094 |
| Acceso en línea: | http://hdl.handle.net/20.500.14342/3094 https://doi.org/10.1016/j.physletb.2014.07.051 |
| Access Level: | acceso abierto |
| Palabra clave: | Gran col·lisionador d'hadrons (França i Suïssa) Partícules (Física nuclear) Col·lisions (Física nuclear) 539 |
| Sumario: | Measurements of the effective lifetimes in the B0s→K+K−, B0→K+π− and B0s→π+K− decays are presented using 1.0 fb−1 of pp collision data collected at a centre-of-mass energy of 7 TeV by the LHCb experiment. The analysis uses a data-driven approach to correct for the decay time acceptance. The measured effective lifetimes are τB0s→K+K− = 1.407 ± 0.016 ± 0.007 ps, τB0→K+π− = 1.524 ± 0.011 ± 0.004 ps, τB0s→π+K− = 1.60 ± 0.06 ± 0.01 ps. This is the most precise determination to date of the effective lifetime in the B0s→K+K− decay and provides constraints on contributions from physics beyond the Standard Model to the B0s mixing phase and the width difference ΔΓs. |
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