Abstract
Using a dataset corresponding to an integrated luminosity of 3.0 fb−1 collected in pp collisions at centre-of-mass energies of 7 and 8 TeV, the B0s → φφ branching fraction is measured to be B(B0s → φφ) = (1.84 ± 0.05(stat) ± 0.07(syst) ± 0.11 (fs/fd) ± 0.12 (norm)) × 10−5 where fs/fd represents the ratio of the B0s to B0 production cross-sections, and the B0 → φK*(892)0 decay mode is used for normalization. This is the most precise measurement of this branching fraction to date, representing a factor five reduction in the statistical uncertainty compared with the previous best measurement. A search for the decay B0 → φφ is also made. No signal is observed, and an upper limit on the branching fraction is set as B(B0 → φφ) < 2.8 × 10−8 at 90% confidence level. This is a factor of seven improvement compared to the previous best limit.
Original language | English |
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Article number | 53 |
Number of pages | 18 |
Journal | Journal of High Energy Physics |
Volume | 2015 |
Issue number | 10 |
DOIs | |
Publication status | Published - 8 Oct 2015 |
Keywords
- B physics
- Branching fraction
- Flavor physics
- Hadron-Hadron Scattering
ASJC Scopus subject areas
- Nuclear and High Energy Physics