A measurement of the $K^{+}\to {\pi }^{+}{\mu }^{+}{\mu }^{-}$ decay

NA62 Collaboration

A sample of $2.8\times 10^4$ $K^{+}\to {\pi }^{+}{\mu }^{+}{\mu }^{-}$ candidates with negligible background was collected by the NA62 experiment at the CERN SPS in 2017--2018. The model-inde…