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State-of-the-art cross sections for ttH: NNLO predictions matched with NNLL resummation and EW corrections
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State-of-the-art cross sections for ttH: NNLO predictions matched with NNLL resummation and EW corrections
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We present new, state-of-the-art predictions for the associated production of the SM Higgs boson with top quarks, computed in accordance with the recommendations of the LHC Higgs Working Group. The NNLO QCD predictions, derived through suitable approximations of the two-loop virtual contribution, are supplemented with soft-gluon resummation up to NNLL accuracy. Two distinct resummation frameworks are employed - one based on direct QCD and the other on soft-collinear effective theory - and their features are compared in detail. These results are further combined with the complete-NLO corrections, yielding the most precise SM predictions for this process to date. The relevant sources of theoretical uncertainties are thoroughly estimated and discussed.
Forward citations
Cited by 4 Pith papers
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Top-associated Higgs-boson production using perturbative fragmentation functions at next-to-leading-order
Perturbative fragmentation functions reproduce the leading top-mass dependence of the exact NLO ttH cross section in the hybrid prescription at LHC energies.
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Next-to-next-to-leading order event generation for $t\bar{t}H$ production with approximate two-loop amplitude
First NNLO+PS (MiNNLOPS) generator for ttH production, combining soft-Higgs and high-energy approximate two-loop amplitudes pointwise, with one-loop-level validation.
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Top-associated Higgs-boson production using perturbative fragmentation functions at next-to-leading-order
Perturbative fragmentation functions approximate ttH production at NLO and yield reliable results in the hybrid prescription at LHC energies.
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Non-standard decays of vector-like top partners in a $2$-Higgs doublet model at the HL-LHC
Collider analysis shows the 2τ + 2b + MET channel can probe vector-like top partners up to 1.9 TeV in 2HDM scenarios at HL-LHC.
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