Associated production of a top pair and a Higgs boson beyond NLO

Abstract

We consider soft gluon emission corrections to the production of a top-antitop pair in association with a Higgs boson at hadron colliders. In particular, we present a soft-gluon resummation formula for this production process and gather all elements needed to evaluate it at next-to-next-to-leading logarithmic order. We employ these results to obtain approximate next-to-next-to-leading order (NNLO) formulas, and implement them in a bespoke parton-level Monte Carlo program which can be used to calculate the total cross section along with arbitrary differential distributions. We use this tool to study the phenomenological impact of the approximate NNLO corrections, finding that they increase the total cross section and the differential distributions which we evaluated in this work.

35 pages, 5 tables and 12 figures. Version published in JHEP 1603 (2016) 124

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• Higgs boson production in association with a top-antitop quark pair in next-to-next-to leading order QCD
• Higgs production in association with off-shell top-antitop pairs at NLO EW and QCD at the LHC
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• Les Houches 2021: Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• Prospects for Higgs physics at energies up to 100 TeV
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• CP tests of Higgs couplings in $t\bar{t}h$ semileptonic events at the LHC
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• Soft-gluon corrections for the associated production of a single top quark and a Higgs boson
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• Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
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• Two-loop infrared singularities in the production of a Higgs boson associated with a top-quark pair
• State-of-the-art cross sections for ttH: NNLO predictions matched with NNLL resummation and EW corrections
• Higgs-boson production in top-quark fragmentation
• Next-to-next-to-leading order event generation for $t\bar{t}H$ production with approximate two-loop amplitude
• HEP-Frame: an Efficient Tool for Big Data Applications at the LHC