{
  "abstract": "We study the universal properties of near-threshold $s$-wave eigenstates in systems with Coulomb plus short-range interactions by analyzing their compositeness. Using a nonrelativistic effective field theory, we derive a relation between the compositeness of near-threshold states and the Coulomb scattering length, the Coulomb effective range, and the Bohr radius. We find that the long-range Coulomb interaction modifies the threshold behavior expected from the low-energy universality of purely short-range systems. When the Coulomb interaction is relatively weak compared with the short-range interaction, a remnant of the low-energy universality associated with the short-range interaction survives, leading to composite-dominant near-threshold eigenstates. In contrast, in the strong-Coulomb regime, this remnant disappears.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.08340",
  "author_total": 2,
  "authors": [
    {
      "name": "Tomona Kinugawa"
    },
    {
      "name": "Tetsuo Hyodo"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7bmsdj1dzebr0.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.08340",
  "fulltext_url": null,
  "id": "7bmsdj1dzebr0",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.08340",
  "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": "W7220943347",
  "pdf_url": "https://arxiv.org/pdf/2610.08340",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-06",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/7bmsdj1dzebr0.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:22Z",
      "native_id": "2610.08340",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.08340"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "Compositeness of near-threshold exotic hadrons in systems with Coulomb and short-range interactions",
  "title_text": "Compositeness of near-threshold exotic hadrons in systems with Coulomb and short-range interactions",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:22Z",
  "url": "https://research.draconitic.com/paper/7bmsdj1dzebr0",
  "venue": "arXiv",
  "versions": []
}