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Non-resonant and electroweak NNLO correction to the $e^+ e^-$ top anti-top threshold

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arxiv 1711.10429 v2 pith:VW45PPFE submitted 2017-11-28 hep-ph

Martin Beneke , Andreas Maier , Thomas Rauh , Pedro Ruiz-Femenia This is my paper · ORCID
classification hep-ph
keywords electroweakproductionnnlothresholdanti-topcorrectionnon-resonanttop-pair
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abstract

We determine the NNLO electroweak correction to the $e^+ e^-\to b\bar{b}W^+W^- X$ production cross section near the top-pair production threshold. The calculation includes non-resonant production of the final state as well as electroweak effects in resonant top anti-top pair production with non-relativistic resummation, and elevates the theoretical prediction to NNNLO QCD plus NNLO electroweak accuracy. We then study the impact of the new contributions on the top-pair threshold scan at a future lepton collider.

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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. Resonance-aware parton-shower matching for off-shell top-antitop production with semi-leptonic decays at electron-positron colliders

    hep-ph 2026-02 conditional novelty 7.0 of 10

    A resonance-aware MC@NLO matching procedure preserves top-antitop line shapes when NLO QCD predictions for off-shell ttbar production at e+e− colliders are showered with Pythia8.

  2. Toponium: the smallest bound state and simplest hadron in quantum mechanics

    hep-ph 2024-12 conditional novelty 6.0 of 10

    Using the b-quark production ratio at sqrt(s) near 341 GeV, a simulated CEPC experiment could discover toponium at over 5 sigma and measure the top 1S mass to about 33 MeV.

  3. Invariant-mass distribution of top-quark pairs and top-quark mass determination

    hep-ph 2019-08 conditional novelty 6.0 of 10

    Resumming next-to-leading-power non-relativistic QCD corrections near the top-pair threshold raises the predicted cross section by about 9% and shifts the extracted top mass by about 1.5 GeV.

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