{
  "abstract": "The $Λp$ invariant-mass spectrum near the two physical $ΣN$ thresholds in the $K^-d\\toπ^-Λp$ reaction is studied as a probe of the low-energy $ΣN$ interaction. The reaction is formulated up to two-step processes, and the coupled $Λp$, $Σ^+n$, and $Σ^0p$ channels are described within a constant-$K$-matrix model constrained by spin-triplet scattering lengths. The dependence of the $ΣN\\toΛp$ conversion amplitude on these scattering lengths is examined, and the relation between its line shape and nearby pole positions is investigated. The resulting invariant-mass spectra are studied at different incident kaon momenta and compared qualitatively with existing experimental data. The effects of the spin-singlet $YN$ amplitude and the deuteron wave function are also examined. The line shape near the $ΣN$ thresholds is found to be particularly sensitive to the complex spin-triplet $I=1/2$ $ΣN$ scattering length, indicating that measurements of this spectrum can provide useful constraints on the low-energy $ΣN$ interaction.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.15928",
  "author_total": 2,
  "authors": [
    {
      "name": "Shunsuke Yasunaga"
    },
    {
      "name": "Daisuke Jido"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cwe6qwsx4ep5d.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.15928",
  "fulltext_url": null,
  "id": "cwe6qwsx4ep5d",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.15928",
  "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",
      "nucl-th"
    ],
    [
      "openalex",
      "3106|Quantum Chromodynamics and Particle Interactions"
    ]
  ],
  "openalex": "W7221767112",
  "pdf_url": "https://arxiv.org/pdf/2610.15928",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-11",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/cwe6qwsx4ep5d.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2610.15928",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.15928"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "The $ΣN$ threshold structure in the $K^-d\\toπ^-Λp$ reaction",
  "title_text": "The ΣN threshold structure in the K^-d→π^-Λp reaction",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/cwe6qwsx4ep5d",
  "venue": "arXiv",
  "versions": []
}