Higgs characterisation at NLO in QCD: CP properties of the top-quark Yukawa interaction

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 $t\bar{t}H$ production can provide sensitive probes of the CP nature of the Higgs interactions.

18 pages, 9 figures, 12 tables; v2: references added, version to appear in EPJC

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Cited by in corpus (49)

• The Path to Proton Structure at One-Percent Accuracy
• Higgs boson production in association with top quarks in the POWHEG BOX
• A Monte Carlo global analysis of the Standard Model Effective Field Theory: the top quark sector
• Top-quark mass effects in double and triple Higgs production in gluon-gluon fusion at NLO
• Collider Physics at the Precision Frontier
• tWH associated production at the LHC
• Higgs production in association with a top-antitop pair in the Standard Model Effective Field Theory at NLO in QCD
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• Measurements of $\mathrm{t}\bar{\mathrm{t}}$H production and the CP structure of the Yukawa interaction between the Higgs boson and the top quark in the diphoton decay channel
• On the maximal use of Monte Carlo samples: re-weighting events at NLO accuracy
• Constraints on anomalous Higgs boson couplings to vector bosons and fermions in its production and decay using the four-lepton final state
• New features in the JHU generator framework: constraining Higgs boson properties from on-shell and off-shell production
• 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
• Constraining the CP structure of Higgs-fermion couplings with a global LHC fit, the electron EDM and baryogenesis
• Machine learning the Higgs boson-top quark CP phase
• Optimized probes of $CP$-odd effects in the $t\bar{t}h$ process at hadron colliders
• Indirect $\mathcal{C}\mathcal{P}$ probes of the Higgs-top-quark interaction: current LHC constraints and future opportunities
• Probing the CP structure of the top quark Yukawa coupling: Loop sensitivity vs. on-shell sensitivity
• Direct Higgs-top CP-phase measurement with $t\bar{t}h$ at the 14 TeV LHC and 100 TeV FCC
• Constraining CP-violation in the Higgs-top-quark interaction using machine-learning-based inference
• Boosting to identify: pseudoscalar searches with di-leptonic tops
• Returning CP-Observables to The Frames They Belong
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• CP-violation, Asymmetries and Interferences in $t\bar{t}\varphi$
• Disentangling Boosted Higgs Boson Production Modes with Machine Learning
• Polarized Z bosons from the decay of a Higgs boson produced in association with two jets at the LHC
• Constraining anomalous Higgs boson couplings to virtual photons
• Probing the $CP$ nature of the top-Higgs Yukawa coupling in $t\bar{t}H$ and $tH$ events with $H\to b\bar{b}$ decays using the ATLAS detector at the LHC
• Higgs boson couplings: measurements and theoretical interpretation
• Top-quark pair production as a probe of light top-philic scalars and anomalous Higgs interactions
• Constraints on anomalous Higgs boson couplings to vector bosons and fermions from the production of Higgs bosons using the $\tau \tau$ final state
• Pseudoscalar couplings in $t\bar{t}H$ production at NLO+NLL accuracy
• Search for $CP$ violation in ttH and tH production in multilepton channels in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Probing the CP Structure of the Top Quark Yukawa at the Future Muon Collider
• Determining the space-time structure of bottom-quark couplings to spin-zero particles
• Scalar mass dependence of angular variables in $t\bar{t}\varphi$ production
• Associated production of a top-quark pair with two isolated photons at the LHC through NLO in QCD
• $\mathcal{C}\mathcal{P}$ structure of the top-quark Yukawa interaction: NLO QCD corrections and off-shell effects
• Uncovering new strong dynamics via topological interactions at the 100 TeV collider
• Four top final states with NLO accuracy in perturbative QCD: 4 lepton channel
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• Diphoton Resonances at the LHC
• An interface between the POWHEG BOX and MadGraph5_aMC@NLO
• State-of-the-art cross sections for ttH: NNLO predictions matched with NNLL resummation and EW corrections
• Sensitivity to $\mathcal{C}\mathcal{P}$-violating effective couplings in the top-Higgs sector
• Two-loop leading-color QCD corrections for Higgs plus two-jet production in the heavy-top limit
• Proposal for simplified template cross-sections extension using $\mathcal{C}\mathcal{P}$ observables in $t\overline{t}H$
• Asymmetries in invisible Dark Matter mediator production associated with $t\bar{t}$ final states