{
  "abstract": "We present the first complete QCD corrections to the inclusive decay width Γ t , the W -helicity fractions f L , R , 0 and semi-inclusive distributions for the top-quark decay process t → b + W + + X QCD at next-to-next-to-next-to-leading order (NNNLO) in the strong coupling constant α s . In particular, the pure NNNLO QCD correction decreases Γ t by about 0.8% relative to the previous next-to-next-to-leading order (NNLO) result at the scale of the top-quark pole mass, exceeding the uncertainty estimated by the conventional scale-variation prescription. After taking into account errors from various sources, we get Γ t = 1.314 8 − 0.005 + 0.003 × | V t b | 2 + 0.027 ( m t − 172.69 ) GeV , whose uncertainty meets the request of future colliders. On the other hand, the NNNLO QCD effects on f L , R , 0 are found to be much smaller, at the level of one one per mille for the dominant f 0 , making them precision observables for the top-quark decay process.",
  "abstract_shown": true,
  "affiliations": [
    "Shandong University",
    "Peking University"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Long Chen",
      "orcid": "0000-0003-2161-1866"
    },
    {
      "affs": [
        1
      ],
      "name": "Xiang Chen",
      "orcid": "0009-0009-9864-355X"
    },
    {
      "affs": [
        1
      ],
      "name": "Xin Guan",
      "orcid": "0000-0001-9720-2749"
    },
    {
      "affs": [
        1
      ],
      "name": "Yan-Qing Ma",
      "orcid": "0000-0001-5795-3791"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fe2yyak5pb3xs.bib",
  "cited_by": 10,
  "doi": "10.1103/dvlc-58hx",
  "fulltext_url": null,
  "id": "fe2yyak5pb3xs",
  "issns": [
    "2470-0010",
    "2470-0029",
    "2470-0037"
  ],
  "landing_url": "https://doi.org/10.1103/dvlc-58hx",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3106|Particle physics theoretical and experimental studies"
    ]
  ],
  "openalex": "W4386557362",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-14",
  "publisher": "American Physical Society",
  "ris": "https://research.draconitic.com/paper/fe2yyak5pb3xs.ris",
  "sources": [
    {
      "first_seen": "2026-11-04T13:21:02Z",
      "native_id": "W4386557362",
      "source": "openalex",
      "url": "https://doi.org/10.1103/dvlc-58hx"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3106|Particle physics theoretical and experimental studies",
      "subfield": "high-energy"
    }
  ],
  "title": "Top-quark decay at next-to-next-to-next-to-leading order in QCD",
  "title_text": "Top-quark decay at next-to-next-to-next-to-leading order in QCD",
  "type": "peer-reviewed",
  "updated_at": "2026-11-06T13:20:25Z",
  "url": "https://research.draconitic.com/paper/fe2yyak5pb3xs",
  "venue": "Physical review. D/Physical review. D.",
  "versions": []
}