The first observation of the B0s→η′η′ decay is reported. The study is based on a sample of proton-proton collisions corresponding to 3.0 fb−1 of integrated luminosity collected with the LHCb detector. The significance of the signal is 6.4 standard deviations. The branching fraction is measured to be [3.31±0.64(stat)±0.28(syst)±0.12(norm)]×10−5, where the third uncertainty comes from the B±→η′K± branching fraction that is used as a normalization. In addition, the charge asymmetries of B±→η′K± and B±→ϕK±, which are control channels, are measured to be (−0.2±1.3)% and (+1.7±1.3)%, respectively. All results are consistent with theoretical expectations
The first observation of the B[s over 0] → η[superscript ′]η[superscript ′] decay is reported. The s...
The first observation of the decay B0s→χc1φ and a study of B0→χc1,2K∗0 decays are presented. The ana...
The first observation of the decay B0s → χc1 ϕ and a study of B0 → χc1,2 K⁎0 decays are presented. T...
The first observation of the B0s → η′ η′ decay is reported. The study is based on a sample of proton...
The first observation of the B 0 s → η ′ η ′ decay is reported. The study is based on a sample of pr...
The first observation of the B0s→η′η′ decay is reported. The study is based on a sample of proton-pr...
See paper for full list of authorsInternational audienceThe first observation of the B0s→η′η′ decay ...
The first observation of the B s 0 → η ′ η ′ decay is reported. The study is based on a sample of pr...
The first observation of the B0 s → η0 η0 decay is reported. The study is based on a sample of pro...
The first observation of the B(s)(0)→η'η' decay is reported. The study is based on a sample of proto...
The first observation of the B s 0 → η ′ η ′ decay is reported. The study is based on a sample of pr...
The first observation of the B[s over 0] → η[superscript ′]η[superscript ′] decay is reported. The s...
The first observation of the decay B0s→χc1φ and a study of B0→χc1,2K∗0 decays are presented. The ana...
The first observation of the decay B0s → χc1 ϕ and a study of B0 → χc1,2 K⁎0 decays are presented. T...
The first observation of the B0s → η′ η′ decay is reported. The study is based on a sample of proton...
The first observation of the B 0 s → η ′ η ′ decay is reported. The study is based on a sample of pr...
The first observation of the B0s→η′η′ decay is reported. The study is based on a sample of proton-pr...
See paper for full list of authorsInternational audienceThe first observation of the B0s→η′η′ decay ...
The first observation of the B s 0 → η ′ η ′ decay is reported. The study is based on a sample of pr...
The first observation of the B0 s → η0 η0 decay is reported. The study is based on a sample of pro...
The first observation of the B(s)(0)→η'η' decay is reported. The study is based on a sample of proto...
The first observation of the B s 0 → η ′ η ′ decay is reported. The study is based on a sample of pr...
The first observation of the B[s over 0] → η[superscript ′]η[superscript ′] decay is reported. The s...
The first observation of the decay B0s→χc1φ and a study of B0→χc1,2K∗0 decays are presented. The ana...
The first observation of the decay B0s → χc1 ϕ and a study of B0 → χc1,2 K⁎0 decays are presented. T...