See-saw mechanism and four light neutrino state

Abstract

A formal proof is given that in a see-saw type neutrino mass matrix with only two neutrino mass scales ($m_D\ll m_R$) and the maximal rank of $m_{R(D)}$, we can not get a fourth light sterile neutrino.

5 pages

References in corpus (1)

• Majorana Neutrinos, Neutrino Mass Spectrum, CP-Violation and Neutrinoless Double Beta-Decay: II. Mixing of Four Neutrinos

Cited by in corpus (2)

• See-saw Mechanisms for Dirac and Majorana Neutrino Masses
• The Type-II Singular See-Saw Mechanism