Family Symmetry and Neutrino Mixing


The observed quark hierarchies suggest a simple family symmetry. Generalized to leptons through grand-unified quantum numbers, it produces a neutrino mixing matrix with order-one νμ − ντ mixing, and order-λ 3 νe − νμ and νe − ντ mixings. The intrafamily hierarchy and observed neutrino mass differences together require this symmetry to be anomalous, suggesting through the Green-Schwarz mechanism a string or M-theory origin for the symmetry.

Cite this paper

@inproceedings{Elwood1998FamilySA, title={Family Symmetry and Neutrino Mixing}, author={John K. Elwood and Nikolaos Irges and Pierre Ramond}, year={1998} }