Two-loop leading-color helicity amplitudes for H+2 jets in the heavy-top limit are computed analytically and validated, enabling NNLO phenomenology and revealing an anomalous threshold.
Higgs characterisation at NLO in QCD: CP properties of the top-quark Yukawa interaction
6 Pith papers cite this work, alongside 143 external citations. Polarity classification is still indexing.
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143
external citations · Pith
abstract
At the LHC the CP properties of the top-quark Yukawa interaction can be probed through Higgs production in gluon fusion or in association with top quarks. We consider the possibility for both CP-even and CP-odd couplings to the top quark to be present, and study CP-sensitive observables at next-to-leading order (NLO) in QCD, including parton-shower effects. We show that the inclusion of NLO corrections sizeably reduces the theoretical uncertainties, and confirm that di-jet correlations in $H+2$ jet production through gluon fusion and correlations of the top-quark decay products in $t\bar tH$ production can provide sensitive probes of the CP nature of the Higgs interactions.
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representative citing papers
Phenomenological LHC study finds sensitivity to light spin-1 DM mediators in ttbar events and discrimination power from CP-sensitive angular observables in dileptonic final states.
ATLAS measures ttH cross section times BR(H→γγ) at 1.13 SM with 164 fb⁻¹ at 13.6 TeV, sets tH limit at 6.2 SM, and combined with prior data excludes |α|>38° and purely CP-odd coupling at 5.8σ.
Global scans of complex 2HDM show Type-I models maximize gauge CPV near light-Higgs degeneracy with high eEDM, Type-II suppress gauge CPV but permit large Yukawa CPV and low eEDM via cancellations, plus hidden CPV in the alignment limit via heavy-Higgs mixing angle alpha3.
CMS derives limits on six SMEFT Wilson coefficients, excludes topphilic resonances between 400-1600 GeV, and extracts the top Yukawa coupling from multi-lepton top events in 138 fb^{-1} of 13 TeV data.
Reviews advances toward global SMEFT fits across top, Higgs, and electroweak sectors including NLO QCD effects and multi-sector combinations.
citing papers explorer
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Two-loop leading-color QCD corrections for Higgs plus two-jet production in the heavy-top limit
Two-loop leading-color helicity amplitudes for H+2 jets in the heavy-top limit are computed analytically and validated, enabling NNLO phenomenology and revealing an anomalous threshold.
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$t \bar{t}$ production as a window to invisible new physics
Phenomenological LHC study finds sensitivity to light spin-1 DM mediators in ttbar events and discrimination power from CP-sensitive angular observables in dileptonic final states.
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Probing the Higgs-top Yukawa interaction in the $t\bar{t}H$ and $tH$ processes using $H\rightarrow\gamma\gamma$ with the ATLAS detector
ATLAS measures ttH cross section times BR(H→γγ) at 1.13 SM with 164 fb⁻¹ at 13.6 TeV, sets tH limit at 6.2 SM, and combined with prior data excludes |α|>38° and purely CP-odd coupling at 5.8σ.
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Intrinsic Properties of Large CP Violation in the Complex Two-Higgs-Doublet Model
Global scans of complex 2HDM show Type-I models maximize gauge CPV near light-Higgs degeneracy with high eEDM, Type-II suppress gauge CPV but permit large Yukawa CPV and low eEDM via cancellations, plus hidden CPV in the alignment limit via heavy-Higgs mixing angle alpha3.
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Search for physics beyond the standard model in four and three top quark production events using proton-proton collisions at $\sqrt{s}$ = 13 TeV
CMS derives limits on six SMEFT Wilson coefficients, excludes topphilic resonances between 400-1600 GeV, and extracts the top Yukawa coupling from multi-lepton top events in 138 fb^{-1} of 13 TeV data.
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Towards global fits in EFT's and New Physics implications
Reviews advances toward global SMEFT fits across top, Higgs, and electroweak sectors including NLO QCD effects and multi-sector combinations.