{
  "abstract": "We compute the gauge-invariant, helicity-summed two-loop $N_f$ contribution for $q\\bar q\\to nγ^{(*)}$, $n=2,\\ldots,8$. Local ultraviolet renormalisation, infrared factorisation, analytic loop-energy integration and a new automated threshold subtraction yield finite integrals over real spatial momenta. Adaptive multi-channel Monte Carlo samples loop momenta, helicities and identical-particle permutations. We quantify generation and evaluation costs across multiplicities. The same representation is integrated directly with parton distributions through five photons, yielding inclusive and differential virtual corrections.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.35655",
  "author_total": 1,
  "authors": [
    {
      "name": "Dario Kermanschah"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bfys7vvvqned1.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.35655",
  "fulltext_url": null,
  "id": "bfys7vvvqned1",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.35655",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "openalex",
      "3106|Particle physics theoretical and experimental studies"
    ]
  ],
  "openalex": "W7223889395",
  "pdf_url": "https://arxiv.org/pdf/2610.35655",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-26",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/bfys7vvvqned1.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:35Z",
      "native_id": "2610.35655",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.35655"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Automated two-loop fermion-bubble contributions at high multiplicity",
  "title_text": "Automated two-loop fermion-bubble contributions at high multiplicity",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:35Z",
  "url": "https://research.draconitic.com/paper/bfys7vvvqned1",
  "venue": "arXiv",
  "versions": []
}