Proposed interpretation of tau-neutrinos

Tau-decay is expected to produce, among other particles,also neutral leptons of mass greater than zero, according to the magnetic monopole model presented in several papers. Predicted masses, and criteria for anticipating the formation of such heavy neutral leptons in various tau-decay processes and information which may help detecting them if they are formed, are presented. Because of their long lifetimes such neutral leptons cannot easily be distinguisted from neutrinos, if one is not aware of their properties. (Auth.)