Constraints on the $K_{\mathrm{S}}^0\to {\mu }^{+}{\mu }^{-}$ branching fraction

LHCb collaboration, R. Aaij, C. Abellán Beteta +901

A search for the decay $K_{\mathrm{S}}^0\to {\mu }^{+}{\mu }^{-}$ is performed using proton-proton collision data, corresponding to an integrated luminosity of $5.6{\text{fb}}^{-1}$ a…