Abstract
A flavour gauge theory is observable only if the symmetry is broken at relatively low energies. The intrinsic parity-violation of the fermion representations in a flavour theory describing quark, lepton and higgsino masses and mixings generically requires anomaly cancellation by new fermions. Benchmark supersymmetric flavour models are built and studied to argue that: i) the flavour symmetry breaking should be about three orders of magnitude above the higgsino mass, enough also to efficiently suppress FCNC and CP violation coming from higher-dimensional operators; ii) new fermions with exotic decays into lighter particles are often predicted around the TeV region.
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1Laboratoire de la Direction des Sciences de la Matière du CEA et Unité de Recherche Associé au CNRS (URA2306).
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Savoy, C.A., Thormeier, M. Exotic particles below the TeV from low scale flavour theories. J. High Energ. Phys. 2011, 128 (2011). https://doi.org/10.1007/JHEP03(2011)128
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DOI: https://doi.org/10.1007/JHEP03(2011)128