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Analysis of the CP structure of the Yukawa coupling between the Higgs boson and $\tau$ leptons in proton-proton collisions at $\sqrt{s} =$ 13 TeV

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arxiv 2110.04836 v2 pith:4RRLH6D7 submitted 2021-10-10 hep-ex

classification hep-ex
keywords bosonhiggsleptonsyukawaanalysiscirccollisionscoupling
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

The first measurement of the CP structure of the Yukawa coupling between the Higgs boson and $\tau$ leptons is presented. The measurement is based on data collected in proton-proton collisions at $\sqrt{s} =$ 13 TeV by the CMS detector at the LHC, corresponding to an integrated luminosity of 137 fb$^{-1}$. The analysis uses the angular correlation between the decay planes of $\tau$ leptons produced in Higgs boson decays. The effective mixing angle between CP-even and CP-odd $\tau$ Yukawa couplings is found to be $-$1 $\pm$ 19$^\circ$, compared to an expected value of 0 $\pm$ 21$^\circ$ at the 68.3% confidence level. The data disfavour the pure CP-odd scenario at 3.0 standard deviations. The results are compatible with predictions for the standard model Higgs boson.

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Cited by 3 Pith papers

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

  1. Combination of measurements of CP properties of Higgs boson interactions with vector bosons using proton-proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector

    hep-ex 2026-03 unverdicted novelty 6.0 of 10

    Combined ATLAS Higgs measurements find no CP violation and set the strongest simultaneous SMEFT limits on three CP-odd Wilson coefficients.

  2. Dark Matter and CP Violation in Some Symmetry-Constrained 3HDMs

    hep-ph 2025-06 conditional novelty 4.0 of 10

    S3-symmetric three-Higgs-doublet models allow dark matter in a 29-42 GeV window, exclude heavy candidates above 500 GeV, and admit MeV-scale light scalars, while continuous-symmetry variants produce mass-degenerate da...

  3. BSM: Extended Scalar Sectors

    hep-ph 2025-07 unverdicted novelty 1.0 of 10

    An updated review chapter on extended scalar sectors, their constraints, dark matter and CP violation links, and future collider searches.

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