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Machine-enhanced CP-asymmetries in the Higgs sector

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arxiv 2112.05052 v3 pith:JJB2SAVV submitted 2021-12-09 hep-ph hep-ex

Akanksha Bhardwaj , Christoph Englert , Robert Hankache , Andrew D. Pilkington This is my paper · ORCID
classification hep-phhep-ex
keywords higgsobservablessensitivityangularnetworksneuralsectorallows
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Improving the sensitivity to CP-violation in the Higgs sector is one of the pillars of the precision Higgs programme at the Large Hadron Collider. We present a simple method that allows CP-sensitive observables to be directly constructed from the output of neural networks. We show that these observables have improved sensitivity to CP-violating effects in the production and decay of the Higgs boson, when compared to the use of traditional angular observables alone. The kinematic correlations identified by the neural networks can be used to design new analyses based on angular observables, with a similar improvement in sensitivity.

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Cited by 4 Pith papers

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

  1. $\mathcal{CP}$-Analyses with Symbolic Regression

    hep-ph 2025-07 conditional novelty 6.0 of 10

    Symbolic regression produces analytic, detector-level CP-odd observables for WBF Higgs production and an analytic reconstruction of the Collins-Soper angle in ttH that are competitive with black-box ML and classical methods.

  2. Renormalisation group evolution effects on global SMEFT analyses

    hep-ph 2024-12 conditional novelty 6.0 of 10

    Including RGE effects in a global SMEFT fit improves bounds on poorly constrained four-quark operators but weakens limits on modified Z q qbar couplings by up to a factor of ten.

  3. Future Collider Perspectives on Higgs CP Violation

    hep-ph 2025-11 conditional novelty 5.0 of 10

    Simulated future-collider studies project that FCC-ee and FCC-hh could constrain CP-violating Higgs EFT couplings 10-100 times more tightly than the HL-LHC, with the proton-proton machine strongest overall.

  4. 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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