{
  "id": "hep-ph/9705438",
  "version": "v1",
  "published": "1997-05-27T15:05:39.000Z",
  "updated": "1997-05-27T15:05:39.000Z",
  "title": "Quark-antiquark resonances in the NJL model",
  "authors": [
    "V. Bernard",
    "A. H. Blin",
    "B. Hiller",
    "Yu. P. Ivanov",
    "A. A. Osipov",
    "Ulf-G. Meißner"
  ],
  "comment": "15 pp, LaTeX file, 4 figures (uses epsf)",
  "journal": "Phys.Lett. B409 (1997) 483-490",
  "doi": "10.1016/S0370-2693(97)00930-1",
  "categories": [
    "hep-ph",
    "nucl-th"
  ],
  "abstract": "The problem of the $\\rho$ meson resonance solution in the extended NJL model is studied. It has been shown previously that the solution for the $\\rho$ meson changes smoothly from a bound state to a \"virtual state\" when the vector channel attraction becomes too weak to support bound state solutions. We have found that together with these solutions a separate resonance branch appears which is not connected smoothly with the bound state solutions. At small values of constituent quark mass, $m\\sim 200$ MeV, it corresponds to the physical vector meson resonance solution in the quark-continuum region. The $a_1$ and $\\sigma$ resonances are also discussed.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1997-05-27T15:05:39.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "njl model",
      "quark-antiquark resonances",
      "support bound state solutions",
      "physical vector meson resonance solution",
      "separate resonance branch appears"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "LaTeX",
      "pages": 15,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 443537
    }
  }
}