Constraint on the heavy sterile neutrino mixing angles in the SO(10) model with double see-saw mechanism

Details Constraint on the heavy sterile neutrino mixing angles in the SO(10) model with double see-saw mechanism Constraint on the heavy sterile neutrino mixing angles in the SO(10) model with double see-saw mechanism

2005-10-05

arxiv.org/abs/hep-ph/0510054v2

Eur.Phys.J.C55:623-628,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 4 figures; the version to be published in Eur. Phys. J. C

Scientific paper

10.1140/epjc/s10052-008-0624-4

Constraints on the heavy sterile neutrino mixing angles are studied in the framework of a minimal supersymmetric ${\rm SO}(10)$ model with {\it 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 minimal ${\rm SO}(10)$ model gives an unambiguous Dirac neutrino mass matrix, which enables us to predict the masses and the mixing angles in the enlarged $9 \times 9$ 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.

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