Fermion masses and proton decay in string-inspired SU(4)*SU(2)^2*U(1)_X
High Energy Physics - Phenomenology
2009-11-10 v1
Abstract
We present a supersymmetric model of fermion masses with SU(4)*SU(2)^2*U(1)_X gauge group with matter in fundamental and antisymmetric tensor representations only. The up, down, charged lepton and neutrino Yukawa matrices are distinguished by different Clebsch-Gordan coefficients due to contracting over SU(4) and SU(2)_R indices. We obtain a hierarchical light neutrino mass spectrum with bi-large mixing. The condition that anomalies be cancelled by a Green-Schwarz mechanism leads to fractional U(1)_X charges which exclude violation through dimension-4 and -5 operators.
Keywords
Cite
@article{arxiv.hep-ph/0407151,
title = {Fermion masses and proton decay in string-inspired SU(4)*SU(2)^2*U(1)_X},
author = {Thomas Dent and George Leontaris and John Rizos},
journal= {arXiv preprint arXiv:hep-ph/0407151},
year = {2009}
}
Comments
4 pages, revtex 4, amsmath, amsfonts