Searches for hidden sectors using $K^{+}\to {\pi }^{+}X$ decays

NA62 Collaboration

Results from the study of the rare decays $K^{+}\to {\pi }^{+}\nu \bar{\nu }$, $K^{+}\to {\pi }^{+}{\mu }^{+}{\mu }^{-}$ and $K^{+}\to {\pi }^{+}\gamma \gamma$ at the NA62 experiment at CERN are interpreted in terms…