{
  "id": "1803.07795",
  "version": "v1",
  "published": "2018-03-21T08:33:56.000Z",
  "updated": "2018-03-21T08:33:56.000Z",
  "title": "Phenomenological study on the decay widths of $Υ(nS)\\rightarrow \\bar{d}^{\\ast}(2380)+X$",
  "authors": [
    "Chao-Yi Lü",
    "P. Wang",
    "Y. B. Dong",
    "P. N. Shen",
    "Z. Y. Zhang",
    "D. M. Li"
  ],
  "categories": [
    "hep-ph",
    "nucl-th"
  ],
  "abstract": "The decay widths of $\\Upsilon(nS)$ $\\rightarrow$ $\\bar{d}^{\\ast}(2380)+X$ with $n=1,2,3$ are studied in a phenomenological way. With the help of crossing symmetry, the decay widths are obtained by investigating the imaginary part of the forward scattering amplitudes between $d^\\ast$ and $\\Upsilon(nS)$. The wave functions of $d^\\ast$ and deuteron obtained in previous studies are used for calculating the amplitude. The interaction between $d^{\\ast}$ ($d$) and $\\Upsilon$ is governed by the quark-meson interaction where the coupling constant is determined by fitting the observed widths of $\\Upsilon(nS)$ $\\rightarrow$ $\\bar{d}+X$. The numerical results show that the decay widths of $\\Upsilon(nS)$ $\\rightarrow$ $\\bar{d}^{\\ast}+X$ are about $2 - 10$ times smaller than that of $\\bar{d}+X$. The calculated momentum of $\\bar{d^*}$ is in the range $0.3-0.8$ GeV. Therefore, it is very likely that one can find $\\bar{d}^\\ast(2380)$ in these semi-inclusive decay processes.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-03-21T08:33:56.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "decay widths",
      "phenomenological study",
      "wave functions",
      "imaginary part",
      "quark-meson interaction"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}