{
  "id": "1601.03575",
  "version": "v1",
  "published": "2016-01-14T12:14:42.000Z",
  "updated": "2016-01-14T12:14:42.000Z",
  "title": "Study on decays of $Z_c(4020)$ and $Z_c(3900)$ into $h_c+π$",
  "authors": [
    "Hong-Wei Ke",
    "Xue-Qian Li"
  ],
  "comment": "14 pages, 2 figures",
  "categories": [
    "hep-ph",
    "hep-ex"
  ],
  "abstract": "At the invariant mass spectrum of $h_c\\pi^\\pm$ a new resonance $Z_c(4020)$ has been observed, however the previously confirmed $Z_c(3900)$ does not show up at this channel. In this paper we assume that $Z_c(3900)$ and $Z_c(4020)$ are molecular states of $D\\bar D^*(D^{*} \\bar D)$ and $D^*\\bar D^*$ respectively, then we calculate the transition rates of $Z_c(3900)\\to h_c+\\pi$ and $Z_c(4020)\\to h_c+\\pi$ in the light front model. Our results show that the partial width of $Z_c(3900)\\to h_c+\\pi$ is only three times smaller than that of $Z_c(4020)\\to h_c+\\pi$. $Z_c(4020)$ seems to be a molecular state, so if $Z_c(3900)$ is also a molecular state it should be observed in the portal $e^+e^-\\to h_c\\pi^\\pm$ as long as the database is sufficiently large, by contrary if the future more precise measurements still cannot find $Z_c(3900)$ at $h_c\\pi^\\pm$ channel, the molecular assignment to $Z_c(3900)$ should be ruled out.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-01-14T12:14:42.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "molecular state",
      "light front model",
      "invariant mass spectrum",
      "transition rates",
      "partial width"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2016arXiv160103575K",
      "inspire": 1415271
    }
  }
}