Search for the Decay $K^{+}\to {\pi }^{+}\nu \overline{\nu }$

S. Adler, M. S. Atiya, I-H. Chiang +36

An upper limit on the branching ratio for the decay $K^{+}\to {\pi }^{+}\nu \overline{\nu }$ is set at $2.4\times 10^{-9}$ at the 90\% C.L. using pions in the kinematic region $214…