{
  "id": "1406.0082",
  "version": "v1",
  "published": "2014-05-31T15:16:50.000Z",
  "updated": "2014-05-31T15:16:50.000Z",
  "title": "Contribution of $Z_b$ resonances to $Υ(5S) \\to πππ χ_b$",
  "authors": [
    "Xin Li",
    "M. B. Voloshin"
  ],
  "comment": "7 pages, 1 figure",
  "journal": "Phys. Rev. D 90, 014036 (2014)",
  "doi": "10.1103/PhysRevD.90.014036",
  "categories": [
    "hep-ph",
    "hep-ex"
  ],
  "abstract": "We discuss the recently presented Belle results on the decays $\\Upsilon(5S) \\to \\pi \\pi \\pi \\chi_{bJ}(1P)$. The data indicate that in addition to the $\\omega$ emission, $\\Upsilon(5S) \\to \\omega \\chi_{bJ}$, there is a significant non resonant background in the three pion spectrum. We suggest that a sizable fraction of this background may be associated with the cascade process $\\Upsilon(5S) \\to \\pi Z_b \\to \\pi \\rho \\chi_b$ involving the $Z_b(10610)$ and $Z_b(10650)$ resonances. If confirmed by the data, this would be the first observation of transition from the $Z_b$ resonances to lower bottomonium with emission of a light meson state different from a single pion, which may provide a new input in understanding of the internal dynamics of these resonances.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-05-31T15:16:50.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "14.40.Pq",
      "14.40.Rt"
    ],
    "keywords": [
      "resonances",
      "contribution",
      "significant non resonant background",
      "light meson state",
      "belle results"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review D",
      "year": 2014,
      "month": "Jul",
      "volume": 90,
      "number": 1,
      "pages": "014036"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1298806,
      "adsabs": "2014PhRvD..90a4036L"
    }
  }
}