Search for $B_c^{+}\to \ddot{I}{€}^{+}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ decays and measurement of the branching fraction ratio $\mathcal{B}(B_c^{+}\to \ddot{I}ˆ(2S)\ddot{I}{€}^{+})/\mathcal{B}(B_c^{+}\to J/\ddot{I}ˆ\ddot{I}{€}^{+})$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1078

The first search for nonresonant $B_c^{+}\to \ddot{I}{€}^{+}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ decays is reported. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, c…