Speaker
Alfonso Mondragon
(Instituto de Fisica, UNAM)
Description
A variety of lepton flavour violating effects related to neutrino
oscillations and mixings will be systematically discussed in the
framework of a minimal S3-invariant extension of the Standard
Model. We will give explicit analytical expressions for the matrices
of the Yukawa couplings, the results of a computation of the
branching ratios of some selected flavour-changing neutral current
(FCNC) processes and the contribution of the exchange of
neutral flavour-changing scalars to the anomaly of the muon’s
magnetic moment, in terms of the masses of the charged leptons and the
neutral Higgs bosons. It will also be shown that the S3×Z2 flavour
symmetry and the strong mass hierarchy of the charged leptons
strongly suppress the FCNC processes in the leptonic sector and give
a nearly tri-bimaximal neutrino mixing matrix. The contribution of
the FCNCs to the anomaly of the muon’s magnetic moment is small but
non-negligible.
Author
Alfonso Mondragon
(Instituto de Fisica, UNAM)
