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Two-loop amplitudes for ttH production: the quark-initiated Nf-part

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arxiv 2402.03301 v3 pith:DMHX46F3 submitted 2024-02-05 hep-ph

Bakul Agarwal , Gudrun Heinrich , Stephen P. Jones , Matthias Kerner , Sven Yannick Klein , Jannis Lang , Vitaly Magerya , Anton Olsson This is my paper · ORCID
classification hep-ph
keywords two-loopamplitudeproductionquark-initiatedresultsamplitudesassociationboson
verification ladder T0 review T1 audit T2 compute T3 formal
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We present numerical results for the two-loop virtual amplitude entering the NNLO corrections to Higgs boson production in association with a top quark pair at the LHC, focusing, as a proof of concept of our method, on the part of the quark-initiated channel containing loops of massless or massive quarks. Results for the UV renormalised and IR subtracted two-loop amplitude for each colour structure are given at selected phase-space points and visualised in terms of surfaces as a function of two-dimensional slices of the full phase space.

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Forward citations

Cited by 5 Pith papers

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

  1. Planar Six-Point Feynman Integrals for Four-Dimensional Gauge Theories

    hep-ph 2024-12 accept novelty 8.0 of 10

    All planar two-loop six-point master integrals for four-dimensional gauge theories are computed, and nine-propagator topologies are shown to decouple in the four-dimensional limit.

  2. Two-loop QCD amplitudes for $t\bar{t}W$ production at the LHC in the leading-colour approximation

    hep-ph 2026-08 conditional novelty 7.0 of 10

    First two-loop QCD hard functions for ttW production with exact top and W masses in leading colour, evaluated on a 224,640-point grid and cross-checked by an independent calculation.

  3. The structure of quark mass corrections in the $gg \rightarrow HH$ amplitude at high-energy

    hep-ph 2024-12 conditional novelty 7.0 of 10

    The leading-power mass logarithms in high-energy gg to HH are shown to originate solely from top-quark mass renormalization, enabling a resummation that sharply reduces the mass-scheme uncertainty of the virtual amplitude.

  4. 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.

  5. Kira 3: integral reduction with efficient seeding and optimized equation selection

    hep-ph 2025-05 conditional novelty 6.0 of 10

    Kira 3 cuts Feynman-integral reduction cost by up to two orders of magnitude using smarter seeding and equation selection.

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