{
  "id": "hep-ph/0412221",
  "version": "v1",
  "published": "2004-12-16T01:46:51.000Z",
  "updated": "2004-12-16T01:46:51.000Z",
  "title": "Mechanisms for $χ_{cJ}\\to φφ$ Decays",
  "authors": [
    "H. Q. Zhou",
    "R. G. Ping",
    "B. S. Zou"
  ],
  "comment": "10 pages, 2 figures",
  "journal": "Phys.Lett. B611 (2005) 123-128",
  "doi": "10.1016/j.physletb.2005.02.017",
  "categories": [
    "hep-ph"
  ],
  "abstract": "Exclusive decays of $\\chi_{cJ}(J=0,2)$ into $\\phi\\phi$ are investigated in the framework of perturbative quantum chromodynamics(pQCD) and $\\tpz$ quark pair creation model. The results show that these two mechanisms exhibit a quite different behavior in evaluating the decay width for the $\\chi_{c0}$ and $\\chi_{c2}$. In pQCD method with nonrelativistic(NR) approximation, while the calculated $\\cxpp{2}$ decay width is comparable with measured one, the result for the $\\cxpp{0}$ decay width is suppressed and much smaller than experimental value. However, in $\\tpz$ quark pair creation model, the situation is reversed: the decay width of $\\cxpp{0}$ is greatly enhanced and can reproduce the large measured value, while the contribution to the $\\cxpp{2}$ decay width is small. The results suggest that while the pQCD mechanism is the dominant mechanism for $\\cxpp{2}$ decay, the $\\tpz$ quark pair creation mechanism is the dominant one for $\\cxpp{0}$ decay.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2004-12-16T01:46:51.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.39.Jh",
      "13.25.Gv",
      "14.20.Jn"
    ],
    "keywords": [
      "decay width",
      "quark pair creation model",
      "quark pair creation mechanism",
      "pqcd method",
      "dominant mechanism"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 667273
    }
  }
}