Abstract
The B¯s0→χc2K+K− decay mode is observed and its branching fraction relative to the corresponding χ c1 decay mode, in a ±15 MeV/c 2 window around the ϕ mass, is found to be ℬ(B¯s0→χc2K+K−)ℬ(B¯s0→χc1K+K−)=(17.1±3.1±0.4±0.9)%, where the first uncertainty is statistical, the second systematic and the third due to the knowledge of the branching fractions of radiative χ c decays. The decay mode B¯s0→χc1K+K− allows the B s 0 mass to be measured as m(Bs0)=5366.83±0.25±0.27MeV/c2, where the first uncertainty is statistical and the second systematic. A combination of this result with other LHCb determinations of the B s 0 mass is made.[Figure not available: see fulltext.]
Original language | English |
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Article number | 191 |
Journal | Journal of High Energy Physics |
Volume | 2018 |
Issue number | 8 |
DOIs | |
Publication status | Published - 29 Aug 2018 |
Bibliographical note
The LHCb collaboration, Aaij, R., Adeva, B. et al. J. High Energ. Phys. (2018) 2018: 191. https://doi.org/10.1007/JHEP08(2018)191Keywords
- B physics
- Flavor physics
- Hadron-Hadron scattering (experiments)
ASJC Scopus subject areas
- Nuclear and High Energy Physics