The stringent experimental bound on µ → eγ is compatible with a simultaneous and sizable new physics contribution to the electron and muon anomalous magnetic moments (g − 2) (= e, µ), only if we assume a non-trivial flavor structure of the dipole operator coefficients. We propose a mechanism in which the realization of the (g − 2) correction is manifestly related to the mass generation through a flavor symmetry. A radiative flavon correction to the fermion mass gives a contribution to the anomalous magnetic moment. In this framework, we introduce a chiral enhancement from a non-trivial O(1) quartic coupling of the scalar potential. We show that the muon and electron anomalies can be simultaneously explained in a vast region of the parameter space with predicted vector-like mediators of masses as large as M χ ∈ [0.6, 2.5] TeV.

Flavor symmetriesà la Froggatt-Nielsen (FN) provide a compelling way to explain the hierarchies of fermionic masses and mixing angles in the Yukawa sector. In Supersymmetric (SUSY) extensions of the Standard Model where the mediation of SUSY breaking occurs at scales larger than the breaking of flavor, this symmetry must be respected not only by the Yukawas of the superpotential, but by the soft-breaking masses and trilinear terms as well. In this work we show that contrary to naive expectations, even starting with completely flavor blind soft-breaking in the full theory at high scales, the low-energy sfermion mass matrices and trilinear terms of the effective theory, obtained upon integrating out the heavy mediator fields, are strongly non-universal. We explore the phenomenology of these SUSY flavor models after the latest LHC searches for new physics.

We analyse in detail the phenomenological implications for lepton masses and mixing derived by the breaking of the discrete symmetries A 5 × CP into the subgroups Z 2 × CP in the neutrino sector and Z 5 in the charged lepton sector. We derive accurate analytic expressions for the sum of the neutrino masses Σ i m i as well as for the effective Majorana masses m β and m ββ under different hypotheses for the flavon vevs and compare them with the exact numerical results obtained from the diagonalization of the neutrino mass matrix. √ 3 or h r,2 < 0 ∧ f i > −h r,2 /2 √ 3. The sum rule is Σ = [m 1 + (21ϕ + 13)m 2 − 5(3ϕ + 2)m 3 ] 2 − (84ϕ + 52)m 1m2 + O(sin 2 θ 13 ), (3.84) PLANCK+BAO PLANCK ◼