Fermion transmutation - a renormalization effect in gauge theory
  A new category of phenomena is predicted in which fermions of different flavours can transmute into one another, for example $e \to \mu$ or $e \to \tau$, as a consequence of the `rotating' mass matrix due to renormalization. As examples, calculations will be presented for various such processes. Some of these could be accessible to experiments in the near future. 
S.T. Tsou (Oxford) and H.M. Chan (Rutherford-Appleton Lab)