Example of a Hidden Flavor Sector
  We exemplify earlier general considerations on flavor symmetry breaking employing a hidden sector and exploiting supersymmetry in a specific model. The model is at best a caricature of reality, but it is sufficient to display mechanisms for the natural emergence of minimal low-energy Higgs structure, non-trivial texture zeros and symmetry, and coupling to the standard model only through Higgs fields, which could be considerably more general. 
Brian Patt, David Tucker-Smith, Frank Wilczek