[ital CP] violation in a multi-Higgs-doublet model with flavor-changing neutral currents

Journal Article · Sun May 01 04:00:00 EDT 1994 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.49.4812· OSTI ID:5010694

Deshpande, N G; He, X ^[1]

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1. Institute of Theoretical Science, University of Oregon, Eugene, Oregon 97403-5203 (United States)

We study [ital CP] violation in multi-Higgs-doublet model based on a [ital S][sub 3][times][ital Z][sub 3] horizontal symmetry where the CKM phase is not the principal source of [ital CP] violation. We consider two mechanisms for [ital CP] violation in this model: (a) [ital CP] violation due to complex Yukawa couplings, and (b) [ital CP] violation due to scalar-pseudoscalar Higgs boson mixings. Both mechanisms can explain the observed [ital CP] violation in the neutral kaon system. [epsilon][prime]/[epsilon] due to neutral Higgs boson exchange is small in both mechanisms, but charged Higgs boson contributions can be as large as 10[sup [minus]4] for (a) and 10[sup [minus]3] for (b). [ital CP] violation in the neutral [ital B] system is, however, quite different from the minimal standard model. The neutron electric dipole moment can be as large as the present experimental bound, and can be used to constrain charged Higgs boson masses. The electron EDM is one order of magnitude below the experimental bound in case (b) and smaller in case (a).

• DOE Contract Number: FG06-85ER40224
• OSTI ID: 5010694
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 49:9; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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DIPOLE MOMENTS
ELECTRIC DIPOLE MOMENTS
ELECTRIC MOMENTS
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VIOLATIONS
WEAK NEUTRAL CURRENTS
YUKAWA POTENTIAL