Speaker
Elena Fedotova
(SINP MSU)
Description
A non-minimal expansion of the Majorana fermions mass matrix in the framework of the type I see-saw mechanism is considered. The original parametrizations of mixing and mass matrices of the light and the heavy neutrinos are obtained. It is shown that (i) the effective mass matrix is independent on an approximation, (ii) new contributions in the expansion are of the same order as those used in describing bariogenesis in the early Universe. The model regimes in which higher order corrections may be important are discussed.
Primary author
Elena Fedotova
(SINP MSU)
Co-authors
Dr.
Mikhail Dubinin
(SINP MSU)
