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EnglishWe 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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| Data di pubblicazione: | 2005 | |
| Titolo: | On power and complementarity of the experimental constraints on seesaw models | |
| Autori: | I. Masina; C.A. Savoy | |
| Rivista: | PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY | |
| Abstract: | 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. | |
| Digital Object Identifier (DOI): | 10.1103/PhysRevD.71.093003 | |
| Handle: | http://hdl.handle.net/11392/531671 | |
| Appare nelle tipologie: | 03.1 Articolo su rivista |
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