Radiative seesaw in left-right symmetric model

Abstract

There are some radiative origins for the neutrino masses in the conventional left-right symmetric models with the usual bi-doublet and triplet Higgs scalars. These radiative contributions could dominate over the tree-level seesaw and could explain the observed neutrino masses.

Comments: 5 pages, 3 figures. Revised version with minor change. Accepted by PRD