Electric Dipole Moments of Neutron and Electron in Two-Higgs-Doublet Model with Maximal CP violation
نویسندگان
چکیده
We study the electric dipole moments(EDM) of the neutron and the electron in the two-Higgs-doublet model, in the case that CP symmetry is violated maximally in the neutral Higgs sector. We take account of the Weinberg’s operator O3g = GGG̃ as well as the operator Oqg = qσG̃q for the neutron, and the Barr-Zee diagrams for the electron. It is found that the predicted neutron EDM could be considerably reduced by the destructive contribution of the two Higgs scalars to get the lower value than the experimental bound. As to the electron EDM, the predicted value is smaller in one order than the experimental one.
منابع مشابه
ar X iv : h ep - p h / 94 09 23 4 v 1 6 S ep 1 99 4 OITS - 551 CP VIOLATION IN A Multi - Higgs Doublet Model ∗
Abstract We study CP violation in a multi-Higgs doublet model based on a S3 × Z3 horizontal symmetry. 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 mixings. We find that the predictions for ǫ/ǫ, CP violation in B decays and the electric dipole moments of neutron and electron are differen...
متن کاملExplicit CP violation of the Higgs sector in the next-to-minimal supersymmetric standard model.
We study the explicit CP violation of the Higgs sector in the minimal supersymmetric standard model with a gauge singlet Higgs field. The magnitude of CP violation is discussed in the limiting cases of x ≫ v1, v2 and x ≪ v1, v2, where x and v1,2 denote VEV of singlet and doublet Higgs scalars, respectively. Our numerical predictions of the electric dipole moments of electron and neutron lie aro...
متن کاملCP violation in a multi-Higgs-doublet model with flavor-changing neutral currents.
We study CP violation in a multi-Higgs doublet model based on a S3 × Z3 horizontal symmetry where 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...
متن کاملHiggs-Mediated Electric Dipole Moments in the MSSM: An Application to Baryogenesis and Higgs Searches
We perform a comprehensive study of the dominant twoand higher-loop contributions to the 205Tl, neutron and muon electric dipole moments induced by Higgs bosons, third generation quarks and squarks, charginos and gluinos in the Minimal Supersymmetric Standard Model (MSSM). We find that strong correlations exist among the contributing CP-violating operators, for large stop, gluino and chargino p...
متن کاملHiggs-Boson Two-Loop Contributions to Electric Dipole Moments in the MSSM
The complete set of Higgs-boson two-loop contributions to electric dipole moments of the electron and neutron is calculated in the minimal supersymmetric standard model. The electric dipole moments are induced by CP-violating trilinear couplings of the ‘CP-odd’ and charged Higgs bosons to the scalar top and bottom quarks. Numerical estimates of the individual two-loop contributions to electric ...
متن کامل