A supersymmetric grand unified theory of flavour with image Original Research Article

We construct a realistic Supersymmetric Grand Unified Theory of Flavour based on image, where the quarks and leptons in the 16 of image are assigned to the complex triplet representation of image, while the flavons are assigned to a combination of sextets and anti-triplets of image. Using a D-term vacuum alignment mechanism, we require the flavon sextets of image to be aligned along the 3–3 direction leading to the third family Yukawa couplings, while the flavon anti-triplets describe the remaining Yukawa couplings. Other sextets are aligned along the neutrino flavour symmetry preserving directions leading to tri-bimaximal neutrino mixing via a type II see-saw mechanism, with predictions for neutrinoless double beta decay and cosmology.