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Associated top quark pair production with a heavy boson: differential cross sections at NLO+NNLL accuracy

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arxiv 2001.03031 v2 pith:Y46GZCFT submitted 2020-01-09 hep-ph

Anna Kulesza , Leszek Motyka , Daniel Schwartländer , Tomasz Stebel , Vincent Theeuwes This is my paper · ORCID
classification hep-ph
keywords predictionscrosssectionsdifferentialaccuracybosoncompletennll
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abstract

We present theoretical predictions for selected differential cross sections for the process $pp \to t \bar{t} B$ at the LHC, where $B$ can be a Higgs ($H$), a $Z$ or a $W$ boson. The predictions are calculated in the direct QCD framework up to the next-to-next-leading logarithmic (NNLL) accuracy and matched to the complete NLO results including QCD and electroweak effects. Additionally, results for the total cross sections are provided. The calculations deliver a significant improvement of the theoretical predictions, especially for the $t \bar{t} H$ and the $t \bar{t} Z$ production. In these cases, predictions for both the total and differential cross sections are remarkably stable with respect to the central scale choice and carry a substantially reduced scale uncertainty in comparison with the complete NLO predictions.

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Cited by 4 Pith papers

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

  1. Precise predictions for $t \bar t H$ production at the LHC: inclusive cross section and differential distributions

    hep-ph 2024-11 accept novelty 8.0 of 10

    First fully differential NNLO QCD predictions for ttH production at the LHC, with the missing two-loop virtual part estimated by two complementary approximations and merged with NLO electroweak corrections.

  2. A search for electroweak $t\bar{t}Wj$ production in multileptonic final states at $\sqrt{s} = 13$ TeV with the ATLAS detector and bounds on effective field theory operators

    hep-ex 2025-09 accept novelty 7.0 of 10

    First search for electroweak ttWj production at 13 TeV sets observed (expected) 95% CL upper limits of 251 fb (230 fb) versus the SM prediction of 47.7 fb and constrains the O_Ht and O_HQ^(1) EFT operators.

  3. Next-to-next-to-leading order event generation for $t\bar{t}H$ production with approximate two-loop amplitude

    hep-ph 2026-03 conditional novelty 6.0 of 10

    First NNLO+PS (MiNNLOPS) generator for ttH production, combining soft-Higgs and high-energy approximate two-loop amplitudes pointwise, with one-loop-level validation.

  4. Invariant-mass threshold resummation for the production of four top quarks at the LHC

    hep-ph 2025-05 accept novelty 6.0 of 10

    First invariant-mass threshold resummation for ttbar ttbar production, giving NLO+NLL' predictions for the invariant-mass distribution and total cross section.

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