On the decay modes of interacting and non-interacting K+-mesons

The decay modes of K+-mesons which have been inelastically scattered from nuclei in emulsion have been determined and. it is shown that their relative frequencies are consistent with those obtained for K+-mesons which have not undergone nuclear interaction. Measurements were also made on a total of 286 decay events with a singly charged secondary with the object of discovering without detection bias, particles decaying in the rare τ’ and the Kμ3 modes.