{
  "id": "1504.00861",
  "version": "v1",
  "published": "2015-04-03T15:28:19.000Z",
  "updated": "2015-04-03T15:28:19.000Z",
  "title": "Decay widths of the spin-2 partners of the X(3872)",
  "authors": [
    "M. Albaladejo",
    "F. -K. Guo",
    "C. Hidalgo-Duque",
    "J. Nieves",
    "M. Pavon Valderrama"
  ],
  "comment": "40 pages, 11 figures",
  "categories": [
    "hep-ph",
    "hep-ex"
  ],
  "abstract": "We consider the $X(3872)$ resonance as a $J^{PC}=1^{++}$ $D\\bar D^*$ hadronic molecule. According to heavy quark spin symmetry, there will exist a partner with quantum numbers $2^{++}$, $X_{2}$, which would be a $D^*\\bar D^*$ loosely bound state. The $X_{2}$ is expected to decay dominantly into $D\\bar D$, $D\\bar D^*$ and $\\bar D D^*$ in $d$-wave. In this work, we calculate the decay widths of the $X_{2}$ resonance into the above channels, as well as those of its bottom partner, $X_{b2}$, the mass of which comes from assuming heavy flavor symmetry for the contact terms. We find partial widths of the $X_{2}$ and $X_{b2}$ of the order of a few MeV. Finally, we also study the radiative $X_2\\to D\\bar D^{*}\\gamma$ and $X_{b2} \\to \\bar B B^{*}\\gamma$ decays. These decay modes are more sensitive to the long-distance structure of the resonances and to the $D\\bar D^{*}$ or $B\\bar B^{*}$ final state interaction.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-04-03T15:28:19.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "decay widths",
      "heavy quark spin symmetry",
      "assuming heavy flavor symmetry",
      "final state interaction",
      "quantum numbers"
    ],
    "publication": {
      "doi": "10.1140/epjc/s10052-015-3753-6",
      "journal": "European Physical Journal C",
      "year": 2015,
      "month": "Nov",
      "volume": 75,
      "pages": 547
    },
    "note": {
      "typesetting": "TeX",
      "pages": 40,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2015EPJC...75..547A",
      "inspire": 1357879
    }
  }
}