Photo-Transmutation of Leptons
  By photo-transmutation of leptons we mean photon-lepton reactions of the following type: $\gamma l_\alpha \longrightarrow \gamma l_\beta$ with $l_\alpha \neq l_\beta$, occurring as a consequence of the lepton mass matrix changing its orientation (rotating) under changing scales. In this paper, we first discuss these reactions in general terms, then proceed to the calculation of their cross sections in two specific schemes, one within the framework of the conventional Standard Model, the other being the so-called Dualized Standard Model we ourselves advocate. Although the cross section obtained is generally small the calculation reveals certain special circumstances where these reactions may be accessible to experiment, for example with virtual photons in LEP for $\gamma e \longrightarrow \gamma \tau$, and in BEPC for $\gamma e \longrightarrow \gamma \mu$. 
J Bordes (Valencia), HM Chan (Rutherford Appleton Lab), J Faridani   (Toronto) and ST Tsou (Oxford)