{
  "abstract": "We carry out a unified study of the low-lying $1S$-wave compact states and hadronic molecules composed of hidden charm pentaquarks $qqqc\\bar{c}$ ($q=u,d$) within a semirelativistic potential quark model. Apart from the linear confinement and one-gluon exchange potential between quarks and/or antiquarks, one-boson exchange potential is also included for baryon and meson clusters within the pentaquark system. We also evaluate the fall-apart decays by combining the obtained spectra within the quark exchange model. It is found that the $P_c (4312)^+$, $P_c (4440)^+$, and $P_c (4457)^+$ observed by the LHCb Collaboration in 2019 can be well explained by the hadronic molecules of $[Σ_c\\bar{D}]_{1/2^-}^{1/2}(4318)$, $[Σ_c\\bar{D}^*]_{1/2^-}^{1/2}(4437)$, and $[Σ_c\\bar{D}^*]_{3/2^-}^{1/2}(4458)$, respectively. Meanwhile, $P_c(4380)^+$ reported by LHCb in 2015 may be assigned as the molecule $[Σ_c^*\\bar{D}]_{3/2^-}^{1/2}(4382)$, except that it turns to be a narrow state other than a broad one shown by the experimental data. Our study shows that the $σ$- and $ρ$-meson exchanges are crucial for the formation of $Σ_c^{(*)}\\bar{D}^{(*)}$ bound states with isospin $I=1/2$. Depending on the potential strength of the $σ$ exchange, there may exist very shallow bound states of $Λ_c\\bar{D}^{(*)}$ with isospin $I=1/2$ and $Σ_c^{(*)}\\bar{D}^{(*)}$ with isospin $I=3/2$. Our study may provide useful information for further exploring the hidden-charm pentaquarks in future experiments.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.19749",
  "author_total": 5,
  "authors": [
    {
      "name": "Zhi-Biao Liang"
    },
    {
      "name": "Jun-Jie Liu"
    },
    {
      "name": "Mu-Yang Chen"
    },
    {
      "name": "Xian-Hui Zhong"
    },
    {
      "name": "Qiang Zhao"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/etqmnz4e4xw7h.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.19749",
  "fulltext_url": null,
  "id": "etqmnz4e4xw7h",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.19749",
  "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-ex"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "openalex",
      "3106|Quantum Chromodynamics and Particle Interactions"
    ]
  ],
  "openalex": "W7213580159",
  "pdf_url": "https://arxiv.org/pdf/2609.19749",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/etqmnz4e4xw7h.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:12Z",
      "native_id": "2609.19749",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.19749"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Hidden charm pentaquarks and the nature of $P_{c}$ states observed at LHCb",
  "title_text": "Hidden charm pentaquarks and the nature of P_c states observed at LHCb",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:12Z",
  "url": "https://research.draconitic.com/paper/etqmnz4e4xw7h",
  "venue": "arXiv",
  "versions": []
}