Fermion Masses and Mixings in GUTs with Non-Canonical U(1)_Y
arXiv:0704.3568 · doi:10.1103/PhysRevD.78.015024
Abstract
We discuss fermion masses and mixings in models derived from orbifold GUTs such that gauge coupling unification is achieved without low energy supersymmetry by utilizing a non-canonical U(1)_Y. A gauged U(1)_X flavor symmetry plays an essential role, and the Green-Schwarz mechanism is invoked in anomaly cancellations. Models containing vector-like particles with masses close to M_{GUT} are also discussed.
18 pages