{
  "abstract": "A prediction presented at HADRON 2025 proposed two baryon-like states containing an additional hypothesized $f$ quark that could appear in the decay $\\Bbar\\to\\Lb\\Lc K^-$ in the form of narrow $\\Lc K^-$ resonances at 3800 and 3950~MeV. Public LHCb data are used here to compare three hypotheses with an unbinned, background-aware two-dimensional Dalitz likelihood. The baseline contains nonresonant three-body phase space and an $N(1900)$ contribution in $\\Lb K^-$. A second model tests the two a-priori prediction masses directly, fixing $\\Lc K^-$ resonances at 3800 and 3950~MeV while fitting their widths. A third model keeps the 3800-MeV mass fixed, allows the second $\\Lc K^-$ mass and width to float, and adds two exotic $\\Lc\\Lb$ contributions. The second model gives a nominal Wilks-equivalent improvement of $4.02σ$ over the baseline, while the third gives a nominal value of $6.17σ$. The quoted significances are model-comparison diagnostics only: the resonance fractions are constrained to be non-negative, some fitted widths reach parameter boundaries, the floating mass introduces a trials effect, and efficiency and systematic uncertainties are not yet incorporated.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.37674",
  "author_total": 1,
  "authors": [
    {
      "name": "Soctt Chapman"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/76a9fz21tvys9.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.37674",
  "fulltext_url": null,
  "id": "76a9fz21tvys9",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.37674",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ex"
    ],
    [
      "arxiv",
      "hep-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.37674",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-05",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/76a9fz21tvys9.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:22Z",
      "native_id": "2610.37674",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.37674"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "A Search in LHCb Open Data for $f$-Baryon Resonances Predicted at HADRON 2025",
  "title_text": "A Search in LHCb Open Data for f-Baryon Resonances Predicted at HADRON 2025",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:44Z",
  "url": "https://research.draconitic.com/paper/76a9fz21tvys9",
  "venue": "arXiv",
  "versions": []
}