Abstract
In a search for very rare decays of the K + meson we observed the K +→ μ + νe +e − and K +→e + ν e +e − modes with branching ratios of (10±3) ×10 −7 and (2 +2 −2)×10 −7 respectively. We also put new limits on a decay allowed by the alternate scheme of lepton conservation K +→ π − μ +e +, on a decay with double charged weak current K +→ π − e +e + and on other forbidden decays K +→ μ − νe +e + and K +→ π + μ ±e ±.
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