{
  "abstract": "We present a joint analysis of the processes $e^+e^- \\to J/ψπ^+π^-$ and $e^+e^- \\to J/ψK^+K^-$ at center-of-mass energies from 4.13 to 4.36 GeV. The amplitudes are constructed using the Dalitz-plot decomposition formalism, with the $e^+e^-$ energy dependence encoded through the $Y(4220)$ and $Y(4320)$ resonant structures together with a nonresonant production mechanism. The scalar $ππ/K\\bar K$ final-state interaction is treated dispersively using a coupled-channel Omnès representation. This allows us to describe the measured total cross sections and one-dimensional invariant-mass distributions with a single set of energy-independent parameters. We find that a purely resonant description of the BESIII data is insufficient, requiring a nonresonant term at the amplitude level which undergoes $ππ/K\\bar{K}$ rescattering. Within the present isobar model, we extract Breit-Wigner parameters for the $Z_c(3900)$, $Y(4220)$, and $Y(4320)$ states, and determine the corresponding subprocess cross sections.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Phys. Rev. D 114, 074054 (2026)",
  "arxiv": "2606.07225",
  "author_total": 3,
  "authors": [
    {
      "name": "Viktoriia Ermolina"
    },
    {
      "name": "Igor Danilkin"
    },
    {
      "name": "Marc Vanderhaeghen"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5m82qjjnc6j4m.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.07225",
  "fulltext_url": null,
  "id": "5m82qjjnc6j4m",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.07225",
  "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-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2606.07225",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-30",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5m82qjjnc6j4m.ris",
  "sources": [
    {
      "first_seen": "2026-11-02T12:21:14Z",
      "native_id": "2606.07225",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.07225"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Simultaneous Dalitz-plot decomposition of the $e^+ e^- \\to J/ψ\\, π\\, π\\, (K \\bar{K})$ processes in the 4.13-4.36 GeV region using dispersive final-state interactions",
  "title_text": "Simultaneous Dalitz-plot decomposition of the e^+ e^- → J/ψ π π (K K̅) processes in the 4.13-4.36 GeV region using dispersive final-state interactions",
  "type": "preprint",
  "updated_at": "2026-11-04T15:20:50Z",
  "url": "https://research.draconitic.com/paper/5m82qjjnc6j4m",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/hdnh-9md5",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}