On Power and Complementarity of the Experimental Constraints on Seesaw Models

Details On Power and Complementarity of the Experimental Constraints on Seesaw Models On Power and Complementarity of the Experimental Constraints on Seesaw Models

2005-01-18

arxiv.org/abs/hep-ph/0501166v2

Phys.Rev. D71 (2005) 093003

Physics

High Energy Physics

High Energy Physics - Phenomenology

28 pages, 5 figures; v2: a comment a reference added, minor improvements in the text

Scientific paper

10.1103/PhysRevD.71.093003

We demonstrate the impact that present lepton flavour and CP violation data - neutrino oscillations, baryon asymmetry of the universe, flavour violations in charged lepton decays and lepton electric dipole moments - have on supersymmetric seesaw theories by analysing the class of models based on a U(1) flavour symmetry. The fermion U(1) charges are determined to a large extent by the data, the flavour patterns being naturally defined through their choice. The selected models generically predict mu -> e gamma 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 mu -> e gamma already provides stringent bounds on the contribution of the seesaw couplings to the lepton electric dipole moments.

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