String-Inspired Triplet See-Saw from Diagonal Embedding of SU(2)_L in SU(2)_A x SU(2)_B
High Energy Physics - Phenomenology
2009-11-11 v1 High Energy Physics - Experiment
High Energy Physics - Theory
Abstract
Motivated by string constructions, we consider a variant on the Type II see-saw mechanism involving the exchange of triplet representations of SU(2)_L in which this group arises from a diagonal embedding into SU(2)_A x SU(2)_B. A natural assignment of Standard Model lepton doublets to the two underlying gauge groups results in a bimaximal pattern of neutrino mixings and an inverted hierarchy in masses. Simple perturbations around this leading-order structure can accommodate the observed pattern of neutrino masses and mixings.
Cite
@article{arxiv.hep-ph/0507063,
title = {String-Inspired Triplet See-Saw from Diagonal Embedding of SU(2)_L in SU(2)_A x SU(2)_B},
author = {Paul Langacker and Brent D. Nelson},
journal= {arXiv preprint arXiv:hep-ph/0507063},
year = {2009}
}
Comments
8 pages; uses RevTeX