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Charged leptons; flavour mixing; radiative decays; neutrino masses; decoupling theorem

In radiative decays of charged leptons induced by non-degenerate neutrino masses and consequent lepton flavour-mixing, the dominant suppression factor at the 1-loop level is (Σ m_a²)/m_W²,m_a being the mass of theath neutrino. We show that this suppression factor is presentin all orders in a class of models including the standard model.

P P Divakaran¹ R Ramachandran¹

1. Tata Institute of Fundamental Research, Homi Bhabha Road, Bombay - 400 005, India

Published

February 1982

Manuscript received

30 September 1981

Manuscript revised

14 December 1981