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Next-to-next-to-leading order event generation for top-quark pair production
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Next-to-next-to-leading order event generation for top-quark pair production
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The production of top-quark pairs in hadronic collisions is among the most important reactions in modern particle physics phenomenology and constitutes an instrumental avenue to study the properties of the heaviest quark observed in nature. The analysis of this process at the Large Hadron Collider relies heavily on Monte Carlo simulations of the final state events, whose accuracy is challenged by the outstanding precision of experimental measurements. In this letter we present the first matched computation of top-quark pair production at next-to-next-to-leading order in QCD with all-order radiative corrections as implemented via parton-shower simulations. Besides its intrinsic relevance for LHC phenomenology, this work also establishes an important step towards the simulation of other hadronic processes with colour charges in the final state.
Forward citations
Cited by 10 Pith papers
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NNLO+PS Higgs-pair production in MiNNLOPS
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Complete NLO corrections to off-shell $\boldsymbol{t\bar{t}}$ production in the $\boldsymbol{\ell+j}$ decay channel
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Complete NLO corrections to off-shell $\boldsymbol{t\bar{t}}$ production in the $\boldsymbol{\ell+j}$ decay channel
Complete NLO QCD plus EW corrections are calculated for off-shell ttbar production in the lepton-plus-jets channel, including all doubly, singly and non-resonant diagrams with their interferences.
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Top-Antitop Production and Decay at Threshold at the LHC in QCD Perturbation Theory
All-order threshold-enhanced QCD corrections in three new NLO+PS generators predict a ~10 pb ttbar cross section in the ATLAS threshold bin and reduce the toponium excess to a perturbative QCD effect.
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Top-Antitop Production and Decay at Threshold at the LHC in QCD Perturbation Theory
NLO+PS generators with resummed Coulomb threshold corrections show that N3LO already captures most of the ATLAS-bin enhancement, finite-width effects are small, and the loosely defined toponium piece is only a few picobarns.
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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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Study of $t\bar{t}$ threshold effects in $e\mu$ differential distributions measured in $\sqrt{s}=13$\,TeV $pp$ collisions with the ATLAS detector
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Threshold Top-Quark Pair-Production: Cross Sections and Key Uncertainties
Near-threshold top-quark pair production cross section at 13 TeV LHC is 11.67 pb with +1.43/-1.47 pb uncertainty, including NRQCD Green's function effects and comparison to POWHEG-BOX.
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