CP violation in a multi-Higgs-doublet model with flavor-changing neutral currents
Journal
Physical Review D
Journal Volume
49
Journal Issue
9
Pages
4812-4819
Date Issued
1994
Author(s)
Deshpande, N.G.
Abstract
We study CP violation in a multi-Higgs-doublet model based on a S3×Z3 horizontal symmetry where the CKM phase is not the principal source of CP violation. We consider two mechanisms for CP violation in this model: (a) CP violation due to complex Yukawa couplings, and (b) CP violation due to scalar-pseudoscalar Higgs boson mixings. Both mechanisms can explain the observed CP violation in the neutral kaon system. ε′ε due to neutral Higgs boson exchange is small in both mechanisms, but charged Higgs boson contributions can be as large as 10-4 for (a), and 10-3 for (b). CP violation in the neutral 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). © 1994 The American Physical Society.
SDGs
Type
journal article