LFV and Dipole Moments in Models with A4 Flavour Symmetry
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.
Keywords
Cite
@article{arxiv.0902.3067,
title = {LFV and Dipole Moments in Models with A4 Flavour Symmetry},
author = {Luca Merlo},
journal= {arXiv preprint arXiv:0902.3067},
year = {2009}
}
Comments
10 pages, 1 figure. Adapted from a talk given at "DISCRETE'08: Symposium on Prospects in the Physics of Discrete Symmetries", December 11-16 2008, Valencia, Spain