Neutrino Masses in Superstring Derived Standard--like Models

Details Neutrino Masses in Superstring Derived Standard--like Models Neutrino Masses in Superstring Derived Standard--like Models

1993-03-10

arxiv.org/abs/hep-th/9303060v1

Phys.Lett.B307:311-317,1993

Physics

High Energy Physics

High Energy Physics - Theory

SSCL--Preprint--193

Scientific paper

10.1016/0370-2693(93)90226-8

We propose a new scenario in a class of superstring derived standard--like models that explains the suppression of the left--handed neutrino masses. Due to nonrenormalizable terms and the breaking of the $U(1)_{Z^\prime}$ symmetry a generalized see--saw mechanism takes place. Contrary to the traditional see--saw mechanism in GUTs, the see--saw scale and the right--handed neutrino mass scale are suppressed relative to the $U(1)_{Z^\prime}$ breaking scale.

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