{
  "abstract": "We compare three definitions of $Ξ_c$--$Ξ_c'$ mixing within a constituent-quark model: a spin-component probability angle, a common-source overlap angle, and an SU(3)-breaking mass-operator angle. The probability angle is $3.11^\\circ$, while the two operator-based definitions give $2.48$--$2.58^\\circ$; a second parameter set gives $2.38$--$2.49^\\circ$. The operator-based angles are closer to the lattice determinations $1.2(1)^\\circ$ and $0.810(50)(200)^\\circ$, but remain larger. We then couple conventional $qsQ$ states to virtual $qsQg$ configurations, where $q=u,d$ and $Q=c,b$. An orbital-$S$-wave chromomagnetic transition containing both $j_{Qg}=1/2$ and $3/2$ raises the source and mass-operator charm angles to $2.67$--$3.16^\\circ$ when normalized to reference short-range mass shifts. The hybrid probability stays below $1.7\\%$, and the corresponding bottom angles are $0.42$--$0.48^\\circ$. Eliminating the hybrid sector gives a rank-one mass correction precisely when all weighted transitions select the same retained-state combination. The mode-resolved calculation separates the flavor-breaking response that changes the mixing angle from the response that generates a second transition direction. The accompanying effective-current relation connects this mass analysis to radiative and semileptonic amplitudes through their current matrix elements.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.12525",
  "author_total": 3,
  "authors": [
    {
      "name": "Sanghoon Kim"
    },
    {
      "name": "Gihwan Nam"
    },
    {
      "name": "Jongheon Baek"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0fn0fsk7m623p.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.12525",
  "fulltext_url": null,
  "id": "0fn0fsk7m623p",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.12525",
  "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-ph"
    ],
    [
      "arxiv",
      "nucl-th"
    ],
    [
      "openalex",
      "3106|Quantum Chromodynamics and Particle Interactions"
    ]
  ],
  "openalex": "W7221541860",
  "pdf_url": "https://arxiv.org/pdf/2610.12525",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-12",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0fn0fsk7m623p.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2610.12525",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.12525"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "Mass and decay angles in the $Ξ_c$--$Ξ_c'$ mixing tension: Virtual hybrids and a single-direction criterion",
  "title_text": "Mass and decay angles in the Ξ_c--Ξ_c' mixing tension: Virtual hybrids and a single-direction criterion",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/0fn0fsk7m623p",
  "venue": "arXiv",
  "versions": []
}