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Bounds on CP-violating Higgs-gluon interactions: the case of vanishing light-quark Yukawa couplings

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arxiv 1909.09373 v2 pith:PIU5UPMR submitted 2019-09-20 hep-ph hep-ex

Ulrich Haisch , Amando Hala This is my paper · ORCID
classification hep-phhep-ex
keywords cp-violatinghiggs-gluoninteractionsnedmboundscomparedcouplingseffective
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We investigate CP-violating interactions involving the Higgs boson and gluons within an effective field theory approach, focusing on the specific class of new-physics scenarios where the Yukawa couplings of light quarks are zero or strongly suppressed compared to the standard-model expectations. We compute the contributions of the most relevant higher-dimensional operators of Weinberg type to the electric dipole moment of the neutron (nEDM), which are induced by Feynman diagrams that involve an effective CP-violating Higgs-gluon coupling and top-quark loops. The resulting nEDM sensitivities and prospects are discussed and compared to the existing and expected LHC bounds. We find that future nEDM searches can set non-trivial constraints on CP-violating Higgs-gluon interactions even if the Higgs only couples to the third generation of quarks.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Parton spin correlations and $\mathcal{CP}$ properties in Higgs boson decay at future lepton colliders

    hep-ph 2026-01 conditional novelty 5.0 of 10

    In H→gg at a 240 GeV e+e− collider, the four-point energy-energy correlator with energy weight n=4 gives the strongest sensitivity to gluon spin correlations and, assuming perfect splitting-mode identification in the ...

  2. Sensitivity to $\mathcal{CP}$-violating effective couplings in the top-Higgs sector

    hep-ph 2024-12 conditional novelty 5.0 of 10

    Combining ttbar H and single-top H production at the LHC can separate the real and imaginary parts of a CP-violating top Yukawa coupling, with projected HL-LHC constraints about twice as strong as current ATLAS bounds.

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