A FCNC-free Two-Higgs-Doublet Model comes with CP-violation
2016
In this manuscript, a general FCNC-free and CP-violating pattern of quark-mass matrices in the 2HDM derived in our previous investigations is revised. This revised pattern is to be diagonalized analytically with no symmetries imposed. The unitary transformation matrices thus derived depend on only two parameters in each quark type and subsequently lead to a CKM matrix which depends on at most four parameters. The fitting of theoretically derived CKM elements and their corresponding empirical values are as good as ${\bf O}(10^{-2})$ at tree-level. In a phenomenological way which imposes several fine-tuning parameters into the CKM matrix suitably, the fitting is further improved to ${\bf O}(10^{-4})$. After the derivation, we find this hypothesis also applies to the Standard Model and even a model with three Higgs doublets. This will be a big progress in the derivation of a theoretical origin of CP violation.
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