Resumen
The decays Bc+→J/ψDs+ and Bc+→J/ψDs*+ are observed for the first time using a dataset, corresponding to an integrated luminosity of 3 fb -1, collected by the LHCb experiment in proton-proton collisions at center-of-mass energies of √s=7 and 8 TeV. The statistical significance for both signals is in excess of 9 standard deviations. The following ratios of branching fractions are measured to be B(Bc+→J/ ψDs+)B(Bc+→J/ψπ +)=2.90±0.57±0.24, B(Bc+→J/ψDs*+)B(Bc+→J/ψDs+)=2.37±0.56±0. 10, where the first uncertainties are statistical and the second systematic. The mass of the Bc+ meson is measured to be m Bc+=6276.28±1. 44(stat)±0.36(syst) MeV/c2, using the Bc+→J/ψDs+ decay mode.
Idioma original | English |
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Número de artículo | 112012 |
Publicación | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Volumen | 87 |
N.º | 11 |
DOI | |
Estado | Published - 28 jun 2013 |
Publicado de forma externa | Sí |
All Science Journal Classification (ASJC) codes
- Física nuclear y de alta energía
- Física y astronomía (miscelánea)