Quark Mixing from Mass Matrix Model with Flavor 2 (\leftrightarrow) 3   Symmetry
  We consider an universal mass matrix model which has a seesaw-invariant structure with the most general texture based on flavor 2 (\leftrightarrow) 3 symmetry common to all quarks and leptons. The CKM quark mixing matrix of the model is analyzed. It is shown that the model is consistent with all the experimental data of quark mixings by tuning free parameters of the model. We also show that the values of parameters of the present model consistent with the experimental data are not far from the ones of the mass matrix model with a vanishing (1,1) element. 
Hiroyuki Nishiura, Koichi Matsuda, Takeshi Fukuyama