Democratic mass matrices from five dimensions
Andrea Soddu, Ngoc-Khanh Tran · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 2004
We reconstruct the standard model quark masses and the Cabibbo-Kobayashi-Maskawa (CKM) matrix from a five-dimensional model, with the fifth dimension compactified on an ${S}^{1}{/Z}_{2}$ orbifold. Fermions are localized only at the orbifold fixed points and the induced quark mass matrices are almost democratic. Two specific versions of our model with 15 and 24 parameters are presented, and for both versions we can reproduce the quark mass spectrum and CKM matrix correctly to the level they are observed in current experiments.