Exotic particles below the TeV from low scale flavour theories

Carlos A. Savoy, Marc Thormeier
2011 Journal of High Energy Physics  
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
more » ... ppress FCNC and CP violations coming from higher-dimensional operators; ii) new fermions with exotic decays into lighter particles are typically required at scales of the order of the higgsino mass.
doi:10.1007/jhep03(2011)128 fatcat:vfy2qiw4tzdj3e5ef64u76fyai