{
  "abstract": "We discuss key principles that need to be taken into account for higher-order matching to retain the logarithmic accuracy of parton showers, specifically in a context where the matching takes full responsibility for the first $n$ emissions. Failure to respect these principles breaks exponentiation and generates spurious leading-colour super-leading logarithms. Focusing on $e^+e^-$ collisions, and the PanScales showers, we construct a matching procedure that incorporates the leading-colour double-real, $\\mathcal{O}(α_s^2)$, contributions. It relies on new expressions for the inversion of these showers for any number of emissions, and extends techniques developed recently for the higher-order infrared limits of showers. Together, these ingredients allow us to use our showers as full phase-space generators. Our work establishes an important stepping stone towards logarithmically accurate NNLO matching.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.37749",
  "author_total": 6,
  "authors": [
    {
      "name": "Melissa van Beekveld"
    },
    {
      "name": "Keith Hamilton"
    },
    {
      "name": "Gavin P. Salam"
    },
    {
      "name": "Nicolas Schalch"
    },
    {
      "name": "Gregory Soyez"
    },
    {
      "name": "Silvia Zanoli"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cz5kq2vrns1vj.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.37749",
  "fulltext_url": null,
  "id": "cz5kq2vrns1vj",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.37749",
  "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-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.37749",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-27",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/cz5kq2vrns1vj.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:22Z",
      "native_id": "2610.37749",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.37749"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "The double-real part of NNLO matching with logarithmically accurate showers for $e^+e^-$ collisions",
  "title_text": "The double-real part of NNLO matching with logarithmically accurate showers for e^+e^- collisions",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:44Z",
  "url": "https://research.draconitic.com/paper/cz5kq2vrns1vj",
  "venue": "arXiv",
  "versions": []
}