{
  "abstract": "We study the decay $ψ(3686)\\to p K^- \\bar K^0 \\barΞ^0$, treating the $ψ(3686)$ as a $c\\bar c$ state and therefore as a singlet under SU(3) transformations in the light-quark sector. We consider all possible combinations of a baryon, an antibaryon, and two pseudoscalar mesons that form an SU(3) singlet, retaining the terms that can lead to the $p K^- \\bar K^0 \\barΞ^0$ final state through $S$-wave final-state interactions. Three independent SU(3)-singlet structures are identified and assigned different weights. We also include the contribution of the $Λ(1520)$ in the meson-baryon $D$-wave. A fit to the data provides a good description of all six invariant-mass distributions. In addition to the $Λ(1520)$ contribution, we find a small contribution from the $Λ(1670)$ in the $K^-p$ invariant-mass distribution, generated by final-state interactions, and a contribution from the $Σ(1430)$, which produces a significant distortion of the $\\bar K^0p$ invariant-mass distribution relative to phase space. This study demonstrates the value of investigating charmonium decays into a baryon-antibaryon pair and two pseudoscalar mesons, complementing the more commonly studied decays into a baryon-antibaryon pair and a single pseudoscalar meson.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.37922",
  "author_total": 3,
  "authors": [
    {
      "name": "F. C. Sobrinho"
    },
    {
      "name": "W. -T. Lyu"
    },
    {
      "name": "E. Oset"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6a4w5ff3t26ps.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.37922",
  "fulltext_url": null,
  "id": "6a4w5ff3t26ps",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.37922",
  "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"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.37922",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-27",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6a4w5ff3t26ps.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:23Z",
      "native_id": "2610.37922",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.37922"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Meson-baryon final-state interactions in the $ψ(3686)\\to pK^-K_S^0\\barΞ^0$ decay",
  "title_text": "Meson-baryon final-state interactions in the ψ(3686)→ pK^-K_S^0Ξ̅^0 decay",
  "type": "preprint",
  "updated_at": "2026-11-04T15:20:50Z",
  "url": "https://research.draconitic.com/paper/6a4w5ff3t26ps",
  "venue": "arXiv",
  "versions": []
}