{
  "id": "1702.03658",
  "version": "v1",
  "published": "2017-02-13T07:20:44.000Z",
  "updated": "2017-02-13T07:20:44.000Z",
  "title": "Decay width of $d^*(2380) \\to NN π$ process in a chiral constituent quark model",
  "authors": [
    "Yubing Dong",
    "Fei Huang",
    "Pengnian Shen",
    "Zongye Zhang"
  ],
  "comment": "6 pages, 1 figure, and 1 table",
  "categories": [
    "nucl-th",
    "hep-ph"
  ],
  "abstract": "The decay width of three-body single-pion process $d^*\\to NN\\pi^{0,\\pm}$ is calculated by using the $d^*$ wave function obtained from our chiral SU(3) constituent quark model calculation. The effect of the dynamical structure on the width of $d^*$ is taken into account in both the single $\\Delta\\Delta$ channel and coupled $\\Delta\\Delta+CC$ two-channel approximations. Our numerical result shows that in the coupled-channel approximation, namely, the hidden-color configuration being considered, the obtained partial decay width of $d^*\\to NN\\pi$ is about several hundred $\\rm {KeV}$, even in the single $\\Delta\\Delta$ channel, it is just about $2\\sim 3~\\rm{MeV}$. We, therefore, conclude that the partial width in the single-pion decay process of $d^*$ is much less than the widths in its double-pion decay processes. Our prediction may provide a criterion for judging different interpretations of the $d^*$ structure.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-02-13T07:20:44.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "chiral constituent quark model",
      "constituent quark model calculation",
      "double-pion decay processes",
      "three-body single-pion process",
      "partial decay width"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}