Higgs CP Violation from Vectorlike Quarks

Abstract

We explore CP violating aspects in the Higgs sector of models where new vectorlike quarks carry Yukawa couplings mainly to the third generation quarks of the Standard Model. We point out that in the simplest model, Higgs CP violating interactions only exist in the hWW channel. At low energy, we find that rare B decays can place similarly strong constraints as those from electric dipole moments on the source of CP violation. These observations offer a new handle to discriminate from other Higgs CP violating scenarios such as scalar sector extensions of the Standard Model, and imply an interesting future interplay among limits from different experiments.

19 pages, 5 figures

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Cited by in corpus (6)

• Vector-like top/bottom quark partners and Higgs physics at the LHC
• Electroweak Baryogenesis with Vector-like Leptons and Scalar Singlets
• Electroweak phase transitions in multi-Higgs models: the case of Trinification-inspired THDSM
• New signals for vector-like down-type quark in $U(1)$ of $E_6$
• Complementarity of Resonant Scalar, Vector-Like Quark and Superpartner Searches in Elucidating New Phenomena
• Vector-like quark doublets, weak-basis invariants and CP violation