See-Saw Type Mixing and $ u_{\mu} o u_{ au} $ Oscillations

摘要

We consider $ \nu_{\mu} \to \nu_{\tau} $ oscillations under the assumptionthat there is a see-saw type mixing of the light neutrinos with heavy Majoranaparticles. It is shown that the existing data, including the recent LEP data,do not exclude the possibility that the additional terms in the transitionprobability due to this mixing could be of the same order of magnitude as theusual oscillating term. Detail investigations of $ \nu_{\mu} \to \nu_{\tau} $transitions in future CERN and Fermilab experiments could allow to getinformations not only about the neutrino masses and mixing but also about themixing of neutrinos with heavy Majorana particles.