Search for the decay $K^{+}$ → $π^{+}$ νν¯

Publisher Website

1 January 1990

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 64 (1) , 21-24
https://doi.org/10.1103/physrevlett.64.21

Abstract

An upper limit on the branching ratio for the decay

K^{+}

→

π^{+}

νν¯ is set at 3.4×

10^{- 8}

(90% C.L.). In addition, a 90%-C.L. upper limit of 6.4×

10^{- 9}

is set on the branching ratio for decays of the form

K^{+}

→

π^{+}

X^{0}

, where

X^{0}

is any massless, weakly interacting neutral particle. Limits &>0. .AE

Keywords

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