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Hierarchical Matrices in the See-Saw Mechanism, large Neutrino Mixing and Leptogenesis
Werner Rodejohann
We consider the see-saw mechanism for hierarchical Dirac and Majorana neutrino mass matrices m_D and M_R, including the CP violating phases. Simple arguments about the structure of…
A Parametrization for the Neutrino Mixing Matrix
W. Rodejohann
We propose a flexible and model independent parametrization of the neutrino mixing matrix, which takes advantage of the fact that there are up to three small quantities in neutrino…
Neutrino mass matrices leaving no trace
W. Rodejohann
We point attention to the fact that in SO(10) models with non-canonical (type II) see-saw mechanism and exact b-tau unification the trace of the neutrino mass matrix is very small,…
On the Connection of Leptogenesis with Low Energy CP Violation and LFV Charged Lepton Decays
S. Pascoli, S. T. Petcov, W. Rodejohann
Assuming only a hierarchical structure of the heavy Majorana neutrino masses and of the neutrino Dirac mass matrix m_D of the see-saw mechanism, we find that in order to produce th…