Observation of the rare $B_s^0\to \hat{I}{¼}^{+}\hat{I}{¼}^{-}$ decay from the combined analysis of CMS and LHCb data

The CMS, LHCb Collaborations, : +2807

A joint measurement is presented of the branching fractions $B_s^0\to \hat{I}{¼}^{+}\hat{I}{¼}^{-}$ and $B^0\to \hat{I}{¼}^{+}\hat{I}{¼}^{-}$ in proton-proton collisions at the LHC by the CMS and LHCb experiments. The data…