Family Hierarchy from Symmetry Breaking
arXiv:hep-ph/0302264 · doi:10.1103/PhysRevD.67.115010
Abstract
We investigate symmetry breaking patterns from replicated gauge groups which generate anomaly-free and family-dependent U(1) symmetries. We discuss the extent to which these symmetries can explain the observed hierarchies of fermion masses and mixings.
25 pages
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- Seesaw scales and the steps from the Standard Model towards superstring-inspired flipped E_6