An unorthodox alternative for righthanded neutrinos: lefthanded see-saw

Details An unorthodox alternative for righthanded neutrinos: lefthanded see-saw An unorthodox alternative for righthanded neutrinos: lefthanded see-saw

1999-11-02

arxiv.org/abs/hep-ph/9911201v2

Acta Phys.Polon. B31 (2000) 673-679

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 7 pages, no figures, four wrapping errors removed

Scientific paper

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.

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