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Scalar and pseudoscalar Higgs production in association with a top-antitop pair
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We present the calculation of scalar and pseudoscalar Higgs production in association with a top-antitop pair to the next-to-leading order (NLO) accuracy in QCD, interfaced with parton showers according to the MC@NLO formalism. We apply our results to the cases of light and very light Higgs boson production at the LHC, giving results for total rates as well as for sample differential distributions, relevant to the Higgs, to the top quarks, and to their decay products. This work constitutes the first phenomenological application of aMC@NLO, a fully automated approach to complete event generation at NLO in QCD.
Forward citations
Cited by 7 Pith papers
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Precise predictions for $t \bar t H$ production at the LHC: inclusive cross section and differential distributions
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Higher-Order Corrections to Higgs Boson Amplitudes with Full Quark Mass Dependence in Quantum Chromodynamics
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Next-to-next-to-leading order event generation for $t\bar{t}H$ production with approximate two-loop amplitude
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Unearthing large pseudoscalar Yukawa couplings with Machine Learning
A CMA-ES scan with novelty reward finds valid C3HDM parameter points with large pseudoscalar hbb, htt and htautau couplings that previous alignment-biased scans had missed.
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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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Analyzing $t\bar{t}Z$-couplings at the future $e^-p$ collider
At a future LHeC, the azimuthal angle between the scattered electron and the lepton from top decay could constrain the ttbarZ axial coupling to about 8% and the vector coupling to about 68% precision at 95% CL with 10...
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The Role of the $t{\bar t}h$ Rest Frame in Direct Top-Quark Yukawa Coupling Measurements
Evaluating the b2 and b4 angular observables in the ttbar h rest frame, instead of the lab frame, reduces by about 250 inverse femtobarns the integrated luminosity needed to exclude a pure CP-odd top-quark Yukawa coupling.
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