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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

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

Anna Kulesza , Leszek Motyka , Daniel Schwartl\"ander , Tomasz Stebel , Vincent Theeuwes This is my paper
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.

  1. 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

    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.

  2. Top-associated Higgs-boson production using perturbative fragmentation functions at next-to-leading-order

    hep-ph 2026-05 conditional novelty 6.0

    Perturbative fragmentation functions reproduce the leading top-mass dependence of the exact NLO ttH cross section in the hybrid prescription at LHC energies.

  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

    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. Top-associated Higgs-boson production using perturbative fragmentation functions at next-to-leading-order

    hep-ph 2026-05 unverdicted novelty 5.0

    Perturbative fragmentation functions approximate ttH production at NLO and yield reliable results in the hybrid prescription at LHC energies.