{
  "abstract": "A measurement of the magnitude of the Cabibbo$-$Kobayashi$-$Maskawa matrix element $V_\\mathrm{cb}$ is presented using top quark pair events produced in proton-proton collisions at $\\sqrt{s}$ = 13 TeV. The data correspond to an integrated luminosity of 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The measurement targets the lepton+jets final state, where one W boson decays leptonically and the other hadronically. The value of $\\lvert V_\\mathrm{cb}\\rvert$ is extracted from the branching fraction of the W $\\to$ cb decay. To identify this rare signal amid the dominant W $\\to$ ud and W $\\to$ cs backgrounds, a multivariate discriminant based primarily on the b jet tagging information of the jets assigned to the hadronic W boson decay is used. The measured value is $\\lvert V_\\mathrm{cb}\\rvert$ = [4.59$^{+0.44}_{-0.48}$ (stat) $^{0.64}_{-0.76}$ (syst)] $\\times$ 10$^{-2}$. This measurement provides a complementary determination of $\\lvert V_\\mathrm{cb}\\rvert$ at the electroweak scale, independent of the nonperturbative quantum chromodynamics inputs used in measurements based on semileptonic B meson decays.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.01274",
  "author_total": 1,
  "authors": [
    {
      "name": "CMS Collaboration"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bbhty6pdcz81r.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.01274",
  "fulltext_url": null,
  "id": "bbhty6pdcz81r",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.01274",
  "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"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.01274",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/bbhty6pdcz81r.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:20:59Z",
      "native_id": "2611.01274",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.01274"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Measurement of the $\\lvert V_\\mathrm{cb}\\rvert$ element of the CKM matrix using $\\mathrm{t\\bar{t}}$ events in pp collisions at $\\sqrt{s}$ = 13 TeV",
  "title_text": "Measurement of the lvert V_cbrvert element of the CKM matrix using tt̅ events in pp collisions at √s = 13 TeV",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:18Z",
  "url": "https://research.draconitic.com/paper/bbhty6pdcz81r",
  "venue": "arXiv",
  "versions": []
}