Universal Seesaw Mechanism with Universal Strength for Yukawa Couplings

Hypotheses of universal seesaw mechanism and universal strength for Yukawa couplings are applied to explain one possible origin of quasi-democratic mass matrices of special type in a left-right symmetric model with the gauge group SU(3)c×SU(2)L×SU(2)R×U(1). Two kinds of Higgs doublets are postulated to mediate scalar interactions between i-th generation of light fermion doublets and j-th generation of heavy fermion singlets with relative Yukawa coupling constants of exponential form eiφij , where φij are real phase constants. The lowest seesaw approximation results effectively in self-adjoint mass matrices which are quasi-democratic and have same diagonal elements. A set of values for parameters φij is found which reproduces well the present experimental data for the absolute values of the CKM matrix elements, the Jarlskog parameter and the Wolfenstein parameters. [email protected] [email protected] [email protected] 1