arXiv:hep-ph/0107298·v1·High Energy Physics — Phenomenology
See-saw mechanism and four light neutrino state
M. Czakon🇵🇱 · J. Gluza🇵🇱 · M. Zralek (Univ. Silesia, Katowice)🇵🇱
Abstract
A formal proof is given that in a see-saw type neutrino mass matrix with only two neutrino mass scales () and the maximal rank of , we can not get a fourth light sterile neutrino.
Comments: 5 pages