Fermion Masses and Mixings in GUTs with Non-Canonical U(1)_Y

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Gogoladze, Ilia
Lee, Chin-Aik
Li, Tianjun
Shafi, Qaisar
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Abstract
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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.
Comment: 18 pages
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High Energy Physics - Phenomenology
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