Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-07-13
Phys.Lett. B605 (2005) 399-405
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, revtex 4, amsmath, amsfonts
Scientific paper
10.1016/j.physletb.2004.11.032
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 $B$ violation through dimension-4 and -5 operators.
Dent Thomas
Leontaris George
Rizos John
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