Projects per year
A search for B+ → D s + K+K− decays is performed using pp collision data corresponding to an integrated luminosity of 4.8 fb−1, collected at centre-of-mass energies of 7, 8 and 13 TeV with the LHCb experiment. A significant signal is observed for the first time and the branching fraction is determined to beB(B+→D+sK+K−)=(7.1±0.5±0.6±0.7)×10−6,
where the first uncertainty is statistical, the second systematic and the third due to the uncertainty on the branching fraction of the normalisation mode B+→D+sD¯¯¯¯0
. A search is also performed for the pure annihilation decay B+ → D s + ϕ. No significant signal is observed and a limit ofB(B+→D+sϕ)<4.9×10−7(4.2×10−7) is set on the branching fraction at 95% (90%) confidence level.
- B physics
- Branching fraction
- Hadron-Hadron scattering (experiments)
- Rare decay