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arXiv · hep-ph/9409421

Sources of CP Violation in the Two-Higgs Doublet Model

Yue-Liang Wu·Lincoln Wolfenstein
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Abstract

Assuming CP violation arises solely through the Higgs potential, we develop the most general two-Higgs doublet model. There is no discrete symmetry that distinguishes the two Higgs bosons. It is assumed that an approximate global family symmetry sufficiently suppresses flavor-changing neutral scalar interactions. In addition to a CKM phase, neutral boson mixing, and superweak effects, there can be significant CP violation due to charged Higgs boson exchange. The value of $ε'/ε$ due to this last effect could be as large as in the standard model.

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Yue-Liang Wu, Lincoln Wolfenstein. 1994-09-27. Sources of CP Violation in the Two-Higgs Doublet Model. https://doi.org/10.1103/physrevlett.73.1762

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