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A New Observable for Measuring CP Property of Top-Higgs Interaction

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arxiv 2008.13442 v1 pith:UQIGQDPW submitted 2020-08-31 hep-ph hep-ex

Qing-Hong Cao , Ke-Pan Xie , Hao Zhang , Rui Zhang This is my paper · ORCID
classification hep-phhep-ex
keywords anglebosondihedralgammahiggsinteractionobservableproperty
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abstract

We propose a new dihedral angle observable to measure the CP property of the interaction of top quark and Higgs boson in the $t\bar{t}H$ production at the 14~TeV LHC. We consider two decay modes of the Higgs boson, $H\to b\bar{b}$ and $H\to \gamma\gamma$ and show that the dihedral angle distribution is able to distinguish the CP-even and the CP-odd hypothesis at 95\% confidence level with an integrated luminosity of $\sim 180~{\rm fb}^{-1}$.

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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. Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders

    hep-ph 2025-12 conditional novelty 6.0 of 10

    A dihadron fragmentation azimuthal asymmetry at e+e− colliders can probe light-quark Yukawa couplings linearly and separate y_u from y_d at the 10^-4 level.

  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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