{
  "abstract": "We study the sensitivity of top-quark pair production at the FCC-ee to heavy new physics, parametrised in the Standard Model effective field theory, using discriminants based on matrix elements. The analysis includes detector reconstruction effects, obtained with a fast simulation of the IDEA detector concept, and jet flavour tagging. We consider dimension-six operators that modify the electroweak couplings of the top quark or generate four-fermion interactions, at leading order and in diagrams with two resonant top quarks. The full six-body kinematic information is employed to maximise the discrimination power against the Standard Model. Two bins per dimension in the space of 12 discriminants, one per operator considered, provide a simple and robust methodology to set nearly optimal multidimensional constraints. Bounds on the new physics scale can reach values up to 30 TeV in a single-operator fit and up to 5 TeV in a global multi-operator fit. A combination with High-Luminosity LHC prospects on top-quark operators shows complementary sensitivities which help lift approximate degeneracies.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.16342",
  "author_total": 4,
  "authors": [
    {
      "name": "Jacopo De Piccoli"
    },
    {
      "name": "Gauthier Durieux"
    },
    {
      "name": "Sergio Sánchez Cruz"
    },
    {
      "name": "Michele Selvaggi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/eeheq43jrt4y8.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.16342",
  "fulltext_url": null,
  "id": "eeheq43jrt4y8",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.16342",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ex"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "openalex",
      "3106|Particle physics theoretical and experimental studies"
    ]
  ],
  "openalex": "W7213440145",
  "pdf_url": "https://arxiv.org/pdf/2609.16342",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/eeheq43jrt4y8.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:41Z",
      "native_id": "2609.16342",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.16342"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Top-quark pair production sensitivity to heavy new physics at the FCC-ee",
  "title_text": "Top-quark pair production sensitivity to heavy new physics at the FCC-ee",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:41Z",
  "url": "https://research.draconitic.com/paper/eeheq43jrt4y8",
  "venue": "arXiv",
  "versions": []
}