Resumo

MONDRAGON, A; MONDRAGON, M  e  PEINADO, E. Lepton flavour violating processes in an S₃ -symmetric model. Rev. mex. fis. [online]. 2008, vol.54, suppl.3, pp.81-91. ISSN 0035-001X.

A variety of lepton flavour violating effects related to the recent discovery of neutrino oscillations and mixings is here systematically discussed in terms of an S₃-flavour permutational symmetry. After presenting some relevant results on lepton masses and mixings, previously derived in a minimal S₃-invariant extension of the Standard Model, we compute the branching ratios of some selected flavour-changing neutral current processes (FCNC) as well as the contribution of the exchange of neutral flavour-changing scalar to the anomaly of the magnetic moment of the muon. We found that the minimal S₃ -invariant extension of the Standard Model describes successfully masses and mixings, as well as, all flavour changing neutral current processes in excellent agreement with experiment.

Palavras-chave : Flavour symmetries; quark and lepton masses and mixings; neutrino masses and mixings; flavour changing neutral currents; muon anomalous magnetic moment.

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