{
  "abstract": "We investigate the internal structure of the newly observed charm-strange meson $D_{s1}(2933)^{+}$, which was reported by the LHCb Collaboration in $B^{0}\\to D^{+}D^{-}K^{+}π^{-}$, in the quark model by treating it as the $2P_{1}$ state of the $c\\bar{s}$ system. The coupled-channel corrections to the ${}^{1}P_1$--${}^{3}P_1$ mass matrix are evaluated through the two-point self-energy loops involving the $DK^{*}$, $D^{*}K$, $D^{*}K^{*}$, $D_{s}ϕ$, $D_{s}^{*}ϕ$ and $D_{s}^{*}η$ intermediate channels. Requiring the corrected eigenvalue to reproduce the measured mass yields a cutoff scale of about $0.82~\\mathrm{GeV}$, a $2P_{1}^{\\prime}$ partner state at $3012~\\mathrm{MeV}$, and a mixing angle of $-12.9^{\\circ}$ that deviates significantly from the heavy-quark ideal-mixing angle. Moreover, the predicted three-body branching ratio fraction $R_{\\text{th}}=1.98$ for $D_{s1}(2933)\\to D^{+}K^{+}π^{-}$ via the $DK^{*}$ and $D_{2}^{*}K$ intermediate states is consistent with the experimental value $R_{\\text{exp}}=1.27^{+1.29}_{-0.95}$ within uncertainties. These results support the assignment of $D_{s1}(2933)$ as the $2P_{1}$ excited state of the $c\\bar{s}$ system with final state interactions.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.32586",
  "author_total": 2,
  "authors": [
    {
      "name": "Jun Wang"
    },
    {
      "name": "Qiang Zhao"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3ccb0ew8120ew.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.32586",
  "fulltext_url": null,
  "id": "3ccb0ew8120ew",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.32586",
  "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",
      "3106|Quantum Chromodynamics and Particle Interactions"
    ]
  ],
  "openalex": "W7214747709",
  "pdf_url": "https://arxiv.org/pdf/2609.32586",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-26",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3ccb0ew8120ew.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:12Z",
      "native_id": "2609.32586",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.32586"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Identification of $D_{s1}(2933)$ as the $2P_{1}$ state in the quark model",
  "title_text": "Identification of D_s1(2933) as the 2P_1 state in the quark model",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:12Z",
  "url": "https://research.draconitic.com/paper/3ccb0ew8120ew",
  "venue": "arXiv",
  "versions": []
}