{
  "id": "hep-ph/0001150",
  "version": "v2",
  "published": "2000-01-17T01:57:10.000Z",
  "updated": "2000-11-24T13:14:51.000Z",
  "title": "Chiral Expansion at Energy Scale of $ρ$-Mass",
  "authors": [
    "Xiao-Jun Wang",
    "Mu-Lin Yan"
  ],
  "comment": "revtex file, 23 pages, 11 eps figures",
  "categories": [
    "hep-ph"
  ],
  "abstract": "We study chiral expansion at $m_\\rho$-scale in framework of chiral constituent quark model. The lowest vector meson resonsances are treated as composited fields of constituent quarks. We illustrate that, at energy scale of $\\rho$-meson mass, the chiral expansion expansion converges slowly. Therefore, it is possible to construct a well-defined chiral effective field theory at this energy scale, but high order correction of chiral expansion must be included simultanously. The one-loop correction of pseudoscalar mesons is also studied systematically. The unitarity of the model is examined and Breit-Wigner formula for $\\rho$-meson is obtained. The prediction on on-shell $\\rho\\to\\pi\\pi$ and $\\rho\\to e^+e^-$ decays agree with data very well.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2000-11-24T13:14:51.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "energy scale",
      "chiral effective field theory",
      "lowest vector meson resonsances",
      "chiral expansion expansion converges"
    ],
    "note": {
      "typesetting": "RevTeX",
      "pages": 23,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 523053,
      "adsabs": "2000hep.ph....1150W"
    }
  }
}