{
  "abstract": "The discovery of the hidden-charm pentaquarks \\(P_c(4312)\\), \\(P_c(4440)\\) and \\(P_c(4457)\\) by the LHCb Collaboration are very likely to identify as the \\(Σ_c^{(*)}\\bar{D}^{(*)}\\) molecules. A natural and crucial extension is the existence of excited molecular partners built from a ground-state charmed baryon and a radially excited anti-charmed meson, namely \\(Σ_c^{(*)}\\bar{D}^{(*)}(2S)\\) molecules. In a framework of chiral quark model, we systematic study pion-emission decays of such excited molecules into the known ground-state \\(P_c\\) molecules. Our results show that the decay widths are sensitive to the spin structures and the coupled-channel interferences, i.e., the \\(Σ_c\\bar{D}(2S)/Σ_c\\bar{D}^*(2S)/Σ_c^*\\bar{D}^*(2S)[1/2(1/2^-)]\\) state decays to \\(P_c(4440)\\) with a width of several MeV, while the width to \\(P_c(4457)\\) is suppressed below \\(0.3\\) MeV due to destructive interference. The pion-emission decay can be the key to unveiling the excited molecular spectrum of hidden-charm pentaquarks and provides decisive experimental signatures. We expect the future experiments such as the LHCb and PANDA can verify our predictions.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2606.15619",
  "author_total": 4,
  "authors": [
    {
      "name": "Yu-Jie Tang"
    },
    {
      "name": "Wen-Yan Peng"
    },
    {
      "name": "Rui Chen"
    },
    {
      "name": "Fu-Lai Wang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/d6vyqr606kgbx.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.15619",
  "fulltext_url": null,
  "id": "d6vyqr606kgbx",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.15619",
  "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/2606.15619",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-02",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/d6vyqr606kgbx.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:16Z",
      "native_id": "2606.15619",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.15619"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Pion radiative decays of excited hidden-charm pentaquark molecules: from $Σ_c^{(*)}\\bar{D}^{(*)}(2S)$ molecules to the reported $P_c$ states",
  "title_text": "Pion radiative decays of excited hidden-charm pentaquark molecules: from Σ_c^(*)D̅^(*)(2S) molecules to the reported P_c states",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:16Z",
  "url": "https://research.draconitic.com/paper/d6vyqr606kgbx",
  "venue": "arXiv",
  "versions": []
}