{
  "id": "2003.07588",
  "version": "v1",
  "published": "2020-03-17T09:04:11.000Z",
  "updated": "2020-03-17T09:04:11.000Z",
  "title": "Revisiting the $Ω(2012)$ as a hadronic molecule and its strong decays",
  "authors": [
    "Jun-Xu Lu",
    "Chun-Hua Zeng",
    "En Wang",
    "Ju-Jun Xie",
    "Li-Sheng Geng"
  ],
  "comment": "6 pages, 4 figures",
  "categories": [
    "hep-ph",
    "hep-ex",
    "nucl-ex",
    "nucl-th"
  ],
  "abstract": "Recently, Belle collaboration measured the ratios of the branching fractions of the newly observed $\\Omega(2012)$ excited state. They did not observe significant signals for the $\\Omega(2012) \\to \\bar{K} \\Xi^*(1530) \\to \\bar{K} \\pi \\Xi$ decay, and reported an upper limit for the ratio of the three body decay to the two body decay mode of $\\Omega(2012) \\to \\bar{K} \\Xi$. In this work, we revisit the newly observed $\\Omega(2012)$ from the molecular perspective where this resonance appears to be a dynamically generated state with spin-parity $3/2^-$ from the coupled channels interactions of the $\\bar{K} \\Xi^*(1530)$ and $\\eta \\Omega$ in $s$-wave and $\\bar{K} \\Xi$ in $d$-wave. With the model parameters for the $d$-wave interaction, we show that the ratio of these decay fractions reported recently by the Belle collaboration can be easily accommodated.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-03-17T09:04:11.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "strong decays",
      "hadronic molecule",
      "belle collaboration",
      "body decay mode",
      "significant signals"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}