Evidence for the decay $B^0\to {\mu }^{+}{\mu }^{-}$ and improved measurements of the decay $B_s^0\to {\mu }^{+}{\mu }^{-}$

LHCb collaboration, R. Aaij, M. Abdelfatah +1165

The first single-experiment evidence for the rare decay $B^0\to {\mu }^{+}{\mu }^{-}$ and the world's most precise measurements of the $B_s^0\to {\mu }^{+}{\mu }^{-}$ branching fraction and effective life…