CP Violation Induced by Heavy Majorana Neutrinos in the Decays of Higgs Scalars into Top-Quark, W- and Z-Boson Pairs

Abstract

We analyze the possibility of $CP$ violation induced by heavy Majorana neutrinos in the decays of the Higgs particle into top-quark, $W$- and $Z$-boson pairs. In the framework of various ``see-saw" models with interfamily mixings, we find that Majorana neutrinos may give rise to sizable $CP$-odd observables at the one-loop electroweak order. Numerical estimates of these $CP$-violating effects that may be detected in high-energy colliders are presented.

16 p. (1 Figure), LaTeX, MAD/PH/787

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Cited by in corpus (11)

• Flavour-Violating Charged Lepton Decays in Seesaw-Type Models
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• Tracing CP violation in the production of top quark pairs by multiple TeV proton-proton collisions
• CP-violating ZZh Coupling at e+e- Linear Colliders
• Astrophysical and Terrestrial Constraints on Singlet Majoron Models
• Resonant CP-Violating Scalar--Pseudoscalar Transitions at mu+ mu- Colliders
• Quantum Effects on Higgs-Boson Production and Decay due to Majorana Neutrinos
• CP violation through particle mixing and the H-A lineshape
• $CP$ violation in the $HZZ$ vertex and left-right asymmetries
• Observing CP-violating Higgs Signals with Heavy Majorana Neutrinos
• $CP$-odd form factor in the $HWW$ vertex