{
  "abstract": "In this work, we theoretically investigate the decay mechanism of $$D_s^+ \\rightarrow \\pi ^+ \\pi ^0 \\pi ^0 \\eta $$ D s + → π + π 0 π 0 η based on BESIII data, considering two mechanisms: the production of two dynamically generated resonances, $$D_s^+ \\rightarrow a_0(980)^+ f_0(500,980)$$ D s + → a 0 ( 980 ) + f 0 ( 500 , 980 ) , and a process with one dynamically generated resonance, $$D_s^+ \\rightarrow a_1(1260)^+\\eta $$ D s + → a 1 ( 1260 ) + η . In the first mechanism, the interactions $$\\pi ^+\\eta $$ π + η and $$K^+\\bar{K}^0$$ K + K ¯ 0 are included to generate the $$a_0(980)^+$$ a 0 ( 980 ) + , while coupled-channel interactions involving $$\\pi ^+\\pi ^-$$ π + π - , $$\\pi ^0\\pi ^0$$ π 0 π 0 , $$K^+K^-$$ K + K - , $$K^0\\bar{K}^0$$ K 0 K ¯ 0 , $$\\eta \\eta $$ η η , and $$\\pi ^0\\eta $$ π 0 η are adopted to generate the $$f_0(500)$$ f 0 ( 500 ) as well as the $$f_0(980)$$ f 0 ( 980 ) . For the second mechanism, the $$\\pi \\rho $$ π ρ and $$\\bar{K}^*{K} - K^*\\bar{K}$$ K ¯ ∗ K - K ∗ K ¯ channels are included to generate the $$a_1(1260)$$ a 1 ( 1260 ) . With these interactions, the amplitudes are calculated in the chiral unitary approach and used to compute the invariant mass spectra of $$D_s^+ \\rightarrow \\pi ^+ \\pi ^0 \\pi ^0 \\eta $$ D s + → π + π 0 π 0 η . The results suggest that the peak near 1000 MeV in the $$\\pi ^+\\eta $$ π + η invariant mass spectrum can be well interpreted as the $$a_0(980)^+$$ a 0 ( 980 ) + arising from a cusp effect. The $$f_0(980)$$ f 0 ( 980 ) , generated together with the $$f_0(500)$$ f 0 ( 500 ) , is responsible for the small structure near 1000 MeV in the $$\\pi ^0\\pi ^0$$ π 0 π 0 spectrum. The $$a_1(1260)^+$$ a 1 ( 1260 ) + and its decay to $$\\rho ^+\\pi ^0$$ ρ + π 0 followed by the subsequent $$\\rho ^+$$ ρ + decay provide a good description of the $$\\pi ^+\\pi ^0\\pi ^0$$ π + π 0 π 0 and $$\\pi ^+\\pi ^0$$ π + π 0 mass spectra. The inclusion of an additional resonance near 800 MeV in the $$\\pi ^+\\eta $$ π + η spectrum leads to only a marginal improvement of the fit.",
  "abstract_shown": true,
  "affiliations": [
    "Nanjing Normal University"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 1,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Jun He",
      "orcid": "0000-0003-3298-6700"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9cp0tsa5gexgy.bib",
  "cited_by": 0,
  "doi": "10.1140/epjc/s10052-026-16461-x",
  "fulltext_url": "https://doi.org/10.1140/epjc/s10052-026-16461-x",
  "id": "9cp0tsa5gexgy",
  "issns": [
    "1434-6052",
    "1434-6044"
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  "language": "en",
  "licence": "CC-BY-4.0",
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  "licence_url": "https://creativecommons.org/licenses/by/4.0",
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      "feed-journal",
      "physics/high-energy"
    ],
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      "lcc",
      "QB460-466"
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      "lcc",
      "QC770-798"
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  "pdf_url": "https://link.springer.com/content/pdf/10.1140/epjc/s10052-026-16461-x.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-01",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/9cp0tsa5gexgy.ris",
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  "subjects": [
    {
      "field": "astronomy",
      "origin": "lcc:QB460-466",
      "subfield": "general"
    },
    {
      "field": "physics",
      "origin": "feed-journal:physics/high-energy",
      "subfield": "high-energy"
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    {
      "field": "physics",
      "origin": "lcc:QC770-798",
      "subfield": "nuclear"
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  "title": "Roles of $$a_0(980)^+ f_0(500,980)$$ and $$a_1(1260)^+\\eta $$ production mechanisms in decay $$D_s^+ \\rightarrow \\pi ^+ \\pi ^0 \\pi ^0 \\eta $$",
  "title_text": "Roles of a_0(980)^+ f_0(500,980) and a_1(1260)^+η production mechanisms in decay D_s^+ → π ^+ π ^0 π ^0 η",
  "type": "peer-reviewed",
  "updated_at": "2026-11-03T14:20:50Z",
  "url": "https://research.draconitic.com/paper/9cp0tsa5gexgy",
  "venue": "The European Physical Journal C",
  "versions": []
}