See-Saw Masses for Quarks and Leptons in SU(5)

Abstract

We build on a recent paper by Grinstein, Redi and Villadoro, where a see-saw like mechanism for quark masses was derived in the context of spontaneously broken gauged flavour symmetries. The see-saw mechanism is induced by heavy Dirac fermions which are added to the Standard Model spectrum in order to render the flavour symmetries anomaly-free. In this letter we report on the embedding of these fermions into multiplets of an SU(5) grand unified theory and discuss a number of interesting consequences.

arXiv comment15 pages, 4 figures (v3: outline restructured, modified mechanism to cancel anomalies)

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• Minimal Flavor Violation in the Lepton Sector
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• Sequential Flavour Symmetry Breaking
• Minimal Flavour Violation and Beyond
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• Grand Unified Theories
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• Searching for BSM Physics in Yukawa Couplings and Flavour Symmetries
• Lepton-flavour violation in a Pati-Salam model with gauged flavour symmetry
• Neutrino and Charged Lepton Flavour Today
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