1999/11/04 by W. Krolikowski
Physics and Astronomy · #hep-ph
published as Acta Phys.Polon. B31 (2000) 673-679 · LaTeX, 7 pages, no figures, four wrapping errors removed
arxiv created 1999/11/04 · arxiv updated 2009/11/30
A new lefthanded see-saw mechanism is constructed, implying both the smallness of active-neutrino masses and decoupling of heavy passive neutrinos, similarly to the situation in the case of conventional see-saw. But now, in place of the conventional righthanded neutrinos, the lefthanded sterile neutrinos play the role of heavy passive neutrinos, the righthanded neutrinos and righthanded sterile neutrinos being absent. Here, the lefthanded sterile neutrinos are different from charge conjugates of conventional righthanded neutrinos because their lepton numbers differ. In this case, the neutrino mass term is necessarily of pure Majorana type.