{
  "abstract": "Inspired by the latest BESIII measurement of the $Λ(1520)\\toγΣ^0$ radiative decay, we systematically study the decays $Λ(1520)\\toγΛ(Σ^0)$ within the chiral unitary approach, where the $Λ(1520)$ is treated as a dynamically generated resonance from meson-baryon interactions. Compared with previous chiral unitary studies, we adopt dimensional regularization for $S$-wave loop integrals to preserve gauge invariance and, for the first time, include Feynman diagrams with photon coupling to intermediate baryons. Our calculated partial decay width $Γ(Λ(1520)\\toγΣ^0)$ agrees well with the new BESIII data, whereas the predicted $Γ(Λ(1520)\\toγΛ)$ is considerably smaller than the CLAS experimental result. By comparing our results with predictions from various quark models, together with an analysis of the $Λ(1520)$ compositeness, we discuss the internal nature of the $Λ(1520)$ resonance, highlight its complex component structure, and stress the need for more refined theoretical frameworks and further experimental measurements.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2605.14946",
  "author_total": 5,
  "authors": [
    {
      "name": "Rui-Xiang Shi"
    },
    {
      "name": "Yu-Bao Zhang"
    },
    {
      "name": "Jun-Xu Lu"
    },
    {
      "name": "Chun-Yan Song"
    },
    {
      "name": "Li-Sheng Geng"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1bj8gg81mmcx8.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.14946",
  "fulltext_url": null,
  "id": "1bj8gg81mmcx8",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.14946",
  "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/2605.14946",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-11",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1bj8gg81mmcx8.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:07Z",
      "native_id": "2605.14946",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.14946"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Radiative decays of the $Λ(1520)$ as a dynamically generated resonance",
  "title_text": "Radiative decays of the Λ(1520) as a dynamically generated resonance",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:07Z",
  "url": "https://research.draconitic.com/paper/1bj8gg81mmcx8",
  "venue": "arXiv",
  "versions": []
}