Power and complementarity of the experimental constraints on seesaw models

We demonstrate the impact that present lepton flavor and CP violation data--neutrino oscillations, baryon asymmetry of the universe, flavor violations in charged lepton decays and lepton electric dipole moments--have on supersymmetric seesaw theories by analyzing the class of models based on a U(1) flavor symmetry. The fermion U(1) charges are determined to a large extent by the data, the flavor patterns being naturally defined through their choice. The selected models generically predict μ→eγ within the reach of the projected experiments, which could be sensitive enough to exclude the whole class of them. By now, the present sensitivity to μ→eγ already provides stringent bounds on the contribution of the seesaw couplings to the lepton electric dipole moments