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- Title
Constraint on the heavy sterile neutrino mixing angles in the SO(10) model with double see-saw mechanism.
- Authors
Fukuyama, T.; Kikuchi, T.; Matsuda, K.
- Abstract
Constraints on the heavy sterile neutrino mixing angles are studied in the framework of a minimal supersymmetric SO(10) model with the use of the double see-saw mechanism. A new singlet matter in addition to the right-handed neutrinos is introduced to realize the double see-saw mechanism. The light Majorana neutrino mass matrix is, in general, given by a combination of those of the singlet neutrinos and the active neutrinos. The minimal SO(10) model is used to give an example form of the Dirac neutrino mass matrix, which enables us to predict the masses and the mixing angles in the enlarged 9×9 neutrino mass matrix. Mixing angles between the light Majorana neutrinos and the heavy sterile neutrinos are shown to be within the LEP experimental bound on all ranges of the Majorana phases.
- Subjects
NEUTRINOS; ORIGANUM; PHYSICS education; PARTICLES (Nuclear physics); NUCLEAR physics
- Publication
European Physical Journal C -- Particles & Fields, 2008, Vol 55, Issue 4, p623
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-008-0624-4