{
  "id": "0912.4860",
  "version": "v2",
  "published": "2009-12-24T13:36:13.000Z",
  "updated": "2010-03-17T16:45:04.000Z",
  "title": "Understanding the branching ratios of χ_{c1}\\toφφ, ωω, ωφobserved at BES-III",
  "authors": [
    "Dian-Yong Chen",
    "Jun He",
    "Xue-Qian Li",
    "Xiang Liu"
  ],
  "comment": "6 pages, 3 figures, 1 table. Title changed, references added, typos corrected and presentation improved. We have removed the content related to the two-mixing angle scheme and only study the effect of \\omega-\\phi mixing on $BR(\\chi_{c1}\\to \\omega\\phi)$ with the one-mixing angle scheme. Accepted by Phys. Rev. D.",
  "journal": "Phys.Rev.D81:074006,2010",
  "doi": "10.1103/PhysRevD.81.074006",
  "categories": [
    "hep-ph",
    "hep-ex"
  ],
  "abstract": "In this work, we discuss the contribution of the mesonic loops to the decay rates of $\\chi_{c1}\\to \\phi\\phi,\\,\\omega\\omega$ which are suppressed by the helicity selection rules and $\\chi_{c1}\\to \\phi\\omega$ which is a double-OZI forbidden process. We find that the mesonic loop effects naturally explain the clear signals of $\\chi_{c1}\\to \\phi\\phi,\\,\\omega\\omega$ decay modes observed by the BES collaboration. Moreover, we investigate the effects of the $\\omega-\\phi$ mixing which may result in the order of magnitude of the branching ratio $BR(\\chi_{c1} \\to \\omega \\phi)$ being $10^{-7}$. Thus, we are waiting for the accurate measurements of the $BR(\\chi_{c1} \\to \\omega \\omega)$, $BR(\\chi_{c1} \\to \\phi \\phi)$ and $BR(\\chi_{c1} \\to \\omega \\phi)$, which may be very helpful for testing the long-distant contribution and the $\\omega-\\phi$ mixing in $\\chi_{c1}\\to\\phi\\phi,\\,\\omega\\omega,\\,\\omega\\phi$ decays.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2010-03-17T16:45:04.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "11.30.Hv",
      "14.40.Pq",
      "12.39.Fe",
      "12.39.Hg"
    ],
    "keywords": [
      "branching ratio",
      "mesonic loop effects",
      "helicity selection rules",
      "double-ozi forbidden process",
      "bes collaboration"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review D",
      "year": 2010,
      "month": "Apr",
      "volume": 81,
      "number": 7,
      "pages": "074006"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 841156,
      "adsabs": "2010PhRvD..81g4006C"
    }
  }
}