{
  "abstract": "We present a systematic study of the magnetic dipole and electric quadrupole moments of compact $[q_1 q_2][\\bar q_3 \\bar c]$ tetraquark states with quantum numbers $J^P = 1^+$, in the diquark--antidiquark picture and within the light-cone QCD sum rule framework. By performing a flavor decomposition across all admissible $u/d$ configurations, we show that the charm-quark contribution to the electromagnetic moments vanishes algebraically at the operator level -- a structural feature of the specific spin organization adopted here, in which the heavy antiquark resides in a pseudoscalar antidiquark, distinct from the dynamical $1/m_c$ suppression operative in alternative compact constructions and in hadronic molecules. The magnetic moments follow a coherent light-flavor pattern -- positive for $uu$-, negative for $dd$-, and suppressed for mixed-flavor diquarks -- and the quadrupole moments are non-zero throughout, corresponding, in the customary geometrical interpretation, to intrinsically deformed charge distributions. We further identify the dimensionless multipole ratio $\\mathcal{D}/μ$ as a structural observable, independent of the normalization of the interpolating current, which probes the relative geometry of the spin-current and charge distributions complementary to the absolute moments. Taken together, the algebraic decoupling of the charm contribution and the operator-level distinction it implies among different singly-heavy tetraquark architectures constitute methodological signatures that discriminate among the corresponding internal organizations and, to the extent that a physical candidate is dominated by one of them, among compact and molecular interpretations.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.27843",
  "author_total": 1,
  "authors": [
    {
      "name": "Ulaş Özdem"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/b8fvh4wxmeb9k.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.27843",
  "fulltext_url": null,
  "id": "b8fvh4wxmeb9k",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.27843",
  "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-lat"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "arxiv",
      "nucl-th"
    ],
    [
      "openalex",
      "3106|Quantum Chromodynamics and Particle Interactions"
    ]
  ],
  "openalex": "W7223158170",
  "pdf_url": "https://arxiv.org/pdf/2610.27843",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-20",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/b8fvh4wxmeb9k.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2610.27843",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.27843"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "Flavor decomposition of electromagnetic multipole moments in $[q_1q_2][\\bar q_3 \\bar c]$ tetraquarks: Light-quark analogs of $T_{cs1}(2900)^0$ with $J^P = 1^+$",
  "title_text": "Flavor decomposition of electromagnetic multipole moments in [q_1q_2][q̅_3 c̅] tetraquarks: Light-quark analogs of T_cs1(2900)^0 with J^P = 1^+",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:04Z",
  "url": "https://research.draconitic.com/paper/b8fvh4wxmeb9k",
  "venue": "arXiv",
  "versions": []
}