See-saw Enhancement of Neutrino Mixing due to the Right-handed Phases
arXiv:hep-ph/9503318 · doi:10.1016/0370-2693(94)01623-K
Abstract
We study the see-saw enhancement mechanism in presence of the right-handed phases of the Dirac neutrino mass matrix and the Majorana mass matrix. The enhancement condition given by Smirnov is modified. We point out that the see-saw enhancement could be obtained due to the right-handed phases even if the Majorana matrix is proportional to the unit matrix. We show a realistic Dirac mass matrix which causes the see-saw enhancement.
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