{
  "id": "2212.02783",
  "version": "v1",
  "published": "2022-12-06T06:38:25.000Z",
  "updated": "2022-12-06T06:38:25.000Z",
  "title": "Understanding the nature of $Ω(2012)$ in a coupled-channel approach",
  "authors": [
    "Qi-Fang Lü",
    "Hideko Nagahiro",
    "Atsushi Hosaka"
  ],
  "comment": "9 pages, 4 figures, comments and suggestions are welcome",
  "categories": [
    "hep-ph",
    "hep-ex",
    "nucl-th"
  ],
  "abstract": "We perform a systematic analysis of the mass and strong decays of the $\\Omega(2012)$ resonance in a coupled-channel approach of a bare three-quark state and a composite meson-baryon state. Besides the coupling of the bare state and $\\Xi^* \\bar K$ channel, the effective meson-baryon interactions are also included. We find a pole with mass of $2008$ MeV by solving the Bethe-Slapter equation. The calculated decay widths and its ratios of branching fractions $\\mathcal {R}_{\\Xi \\bar K}^{\\Xi \\pi \\bar K}$ agree well with the new experimental measurement by Belle Collaboration. Our results suggest that both three-quark core and $\\Xi^* \\bar K$ channel are essential for the description of the $\\Omega(2012)$ resonance. We expect that present calculations can help us to better understand the nature of $\\Omega(2012)$ resonance.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-12-06T06:38:25.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "coupled-channel approach",
      "understand",
      "bare three-quark state",
      "composite meson-baryon state",
      "strong decays"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}