Neutrino Mass Models

By Steve King, University of Southampton

I will review the status of neutrino mass models, focusing on natural implementations of the see-saw mechanism based on sequential dominance. I will then describe some recent developments in this area including the possibility of upgrading type I see-saw models to type II models, and also the possibility that all neutrino mixing can arise from the charged lepton sector. The phenomenological implications for neutrino oscillation experiments, neutrinoless double beta decay and leptogenesis will be discussed. The theoretical model building implications for supersymmetric unified models with family symmetry describing all quark and lepton masses and mixing angles will also be discussed.