QUASI-DEGENERATE NEUTRINOS FROM AN ABELIAN FAMILY SYMMETRY

We show that models with an Abelian family symmetry which accounts for the observed hierarchies of masses and mixings in the quark sector ma y also accommodate quasi-degeneracies in the neutrino mass spectrum. S uch approximate degeneracies are, in this context, associated with lar ge mixing angles. The parameters of this class of models are constrain ed. We discuss their phenomenological implications for present and for eseen neutrino experiments. (C) 1997 Elsevier Science B.V.