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NNLO QCD corrections to leptonic observables in top-quark pair production and decay

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arxiv 2008.11133 v2 pith:WG7T6EWO submitted 2020-08-25 hep-ph hep-ex

Michal Czakon , Alexander Mitov , Rene Poncelet This is my paper · ORCID
classification hep-phhep-ex
keywords pairproductiontop-quarkdatadecaydistributionsfoundnnlo
verification ladder T0 review T1 audit T2 compute T3 formal
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We calculate a comprehensive set of spin correlations and differential distributions in top-quark pair production and decay to dilepton final states. This is the first time such a complete study is performed at next-to-next-to leading order in QCD. Both inclusive and fiducial distributions are presented and analyzed. Good agreement between NNLO QCD predictions and data is found. We demonstrate that it is possible to perform high-precision comparisons of fixed-order calculations with fiducial-level data. Subtleties of the top quark definition are raised and clarified. Some of those are found to have a very significant impact on top-quark pair production at absolute threshold.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Towards NNLO QCD predictions for off-shell top-quark pair production and decays

    hep-ph 2025-07 conditional novelty 8.0 of 10

    The first NNLO QCD prediction for off-shell W+W-bbbar production with massive bottom quarks at the LHC, using a double-pole approximation for the two-loop virtual and an on-shell matching for non-factorisable corrections.

  2. Complete NLO corrections to off-shell $\boldsymbol{t\bar{t}}$ production in the $\boldsymbol{\ell+j}$ decay channel

    hep-ph 2025-12 unverdicted novelty 7.0 of 10

    First complete NLO QCD+EW predictions for off-shell ttbar production in the lepton+jets channel, including all subleading Born and NLO terms and an IR-safe photon-jet treatment, at 13.6 TeV.

  3. Parton distributions confront LHC Run II data: a quantitative appraisal

    hep-ph 2025-01 conditional novelty 6.0 of 10

    A systematic NNLO data-theory comparison shows that the main PDF sets generalise to unseen LHC and HERA data about equally well once PDF, alpha_s, and missing higher order uncertainties are included.

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