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arXiv · 0902.3067

LFV and Dipole Moments in Models with A4 Flavour Symmetry

Luca Merlo
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Abstract

It is presented an analysis on lepton flavour violating transitions, leptonic magnetic dipole moments and electric dipole moments in a class of models characterized by the flavour symmetry A4 x Z3 x U(1)_FN, whose choice is motivated by the approximate Tri-Bimaximal mixing observed in neutrino oscillations. A low-energy effective Lagrangian is constructed, where these effects are dominated by dimension six operators, suppressed by the scale M of new physics. All the flavour breaking effects are universally described by the vacuum expectation values of a set of spurions. Two separate cases, a supersymmetric and a general one, are described. An upper limit on the reactor angle of a few percent is concluded.

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Luca Merlo. 2009-02-18. LFV and Dipole Moments in Models with A4 Flavour Symmetry. https://doi.org/10.1088/1742-6596/171/1/012083

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