{
  "abstract": "We study the prospects for an independent determination of $V_{cb}$ from bottom-tagged charged-current deep-inelastic scattering at future electron-proton colliders: the EIC, LHeC, and FCC-eh. The transition $e^- c \\to ν_e b$ probes $|V_{cb}|^2$ through a process with different theoretical and experimental uncertainties from semileptonic $B$ decays. We fit ratios of $b$-tagged charged-current event counts over flavour-inclusive ones in kinematic bins, including correlated parton-distribution and flavour-tag calibration uncertainties, and floating the other CKM parameters. With projected parton distributions and tagging performance motivated by existing studies, we find a potential relative sensitivity in $|V_{cb}|$ of about $0.8\\%$ at the LHeC with $1\\,\\rm{ab}^{-1}$ of integrated luminosity and $0.7\\%$ at FCC-eh with $2\\,\\rm{ab}^{-1}$. The corresponding EIC sensitivity is instead at the level of $20 - 30 \\%$, depending on the configuration. The LHeC could thus provide a high-energy determination competitive with low-energy ones, but with substantially different dominant systematic uncertainties, on the timescale of its proposed operation between the HL-LHC and FCC-ee. We identify precise flavour-tag calibration and control of the kinematic response as the main requirements for realising this potential sensitivity.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.18961",
  "author_total": 1,
  "authors": [
    {
      "name": "David Marzocca"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bxdhmmm598d34.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.18961",
  "fulltext_url": null,
  "id": "bxdhmmm598d34",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.18961",
  "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"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "openalex",
      "3106|Particle physics theoretical and experimental studies"
    ]
  ],
  "openalex": "W7222149832",
  "pdf_url": "https://arxiv.org/pdf/2610.18961",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-13",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/bxdhmmm598d34.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:31Z",
      "native_id": "2610.18961",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.18961"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Measuring $V_{cb}$ at electron-proton colliders",
  "title_text": "Measuring V_cb at electron-proton colliders",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:21Z",
  "url": "https://research.draconitic.com/paper/bxdhmmm598d34",
  "venue": "arXiv",
  "versions": []
}