{
  "abstract": "The perturbative QCD corrections to the hadronic decay width of the W boson are currently known up to next-to-next-to-next-to-next-to-leading order ($$\\mathrm {N^4LO}$$), whereas the exact $$\\mathrm {N^5LO}$$ correction remains unavailable owing to its formidable computational complexity. In this work, we estimate the $$\\mathrm {N^5LO}$$ contributions by adopting Bayesian analysis (BA). Before performing the estimation, the principle of maximum conformality (PMC) is employed to improve the precision of the initial scale-dependent perturbative series. Through recursive application of the renormalization group equation, non-conformal terms are absorbed into the strong running coupling, yielding a scheme-independent, scale-invariant perturbative series with improved convergence. The PMC procedure determines an effective coupling $$\\alpha _s(Q_*)$$, with the PMC scale fixed as $$Q_*\\!=\\!100.102~\\textrm{GeV}$$ at next-to-next-to-leading logarithmic accuracy. Based on the improved and more precise series, the $$95.5\\%$$ BA credible interval yields an uncertainty of $$\\Delta \\delta _\\textrm{QCD}|_{\\textrm{PMC, BA}}^{\\mathrm {N^5LO}} = \\pm 1.0\\times 10^{-5}$$. The resulting hadronic branching ratio is $$\\mathcal {B}(W\\rightarrow \\text {hadrons})|_\\textrm{PMC} = (65.84\\pm 1.54)\\%$$, which is consistent with experimental data within reasonable errors.",
  "abstract_shown": true,
  "affiliations": [
    "Chongqing University",
    "Chinese Academy of Sciences"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Shu-Heng Yang",
      "orcid": "0009-0004-4562-6717"
    },
    {
      "affs": [
        1
      ],
      "name": "Jiang Yan",
      "orcid": "0000-0001-9247-8850"
    },
    {
      "affs": [
        0
      ],
      "name": "Xing-Gang Wu",
      "orcid": "0000-0002-7343-1907"
    },
    {
      "affs": [
        0
      ],
      "name": "Zhi-Fei Wu",
      "orcid": "0009-0005-1361-8314"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6xctxpparp1z0.bib",
  "cited_by": 0,
  "doi": "10.1140/epjc/s10052-026-16573-4",
  "fulltext_url": null,
  "id": "6xctxpparp1z0",
  "issns": [
    "1434-6052"
  ],
  "landing_url": "https://link.springer.com/article/10.1140/epjc/s10052-026-16573-4",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0",
  "metadata_licence": null,
  "native_subjects": [
    [
      "feed-journal",
      "physics/high-energy"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://link.springer.com/content/pdf/10.1140/epjc/s10052-026-16573-4.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-05",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/6xctxpparp1z0.ris",
  "sources": [
    {
      "first_seen": "2026-11-05T18:20:57Z",
      "native_id": "10.1140/epjc/s10052-026-16573-4",
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      "url": "https://link.springer.com/article/10.1140/epjc/s10052-026-16573-4"
    },
    {
      "first_seen": "2026-11-06T00:20:57Z",
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      "url": "https://link.springer.com/article/10.1140/epjc/s10052-026-16573-4"
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  "subjects": [
    {
      "field": "physics",
      "origin": "feed-journal:physics/high-energy",
      "subfield": "high-energy"
    }
  ],
  "title": "Probability-based estimates of the uncalculated N5LO QCD contribution to the hadronic W-boson decay width",
  "title_text": "Probability-based estimates of the uncalculated N5LO QCD contribution to the hadronic W-boson decay width",
  "type": "peer-reviewed",
  "updated_at": "2026-11-06T12:20:49Z",
  "url": "https://research.draconitic.com/paper/6xctxpparp1z0",
  "venue": "The European Physical Journal C",
  "versions": []
}