{
  "id": "hep-ph/9702240",
  "version": "v1",
  "published": "1997-02-04T09:41:09.000Z",
  "updated": "1997-02-04T09:41:09.000Z",
  "title": "QCD Sum Rules and Vector Mesons in Nuclear Matter",
  "authors": [
    "F. Klingl",
    "W. Weise"
  ],
  "comment": "10 pages of LaTeX-2E using axodraw.sty, epsfig.sty; 2 postscript figures included; Proc. of the Int. Workshop XXV, Hirschegg '97, on 'QCD Phase Transitions'",
  "categories": [
    "hep-ph"
  ],
  "abstract": "Based on an effective Lagrangian which combines chiral SU(3) dynamics with vector meson dominance, we have developed a model for the s-wave vector meson-nucleon scattering amplitudes. We use this as an input for the low energy part of the current-current correlation function in nuclear matter. Its spectrum enters directly in the ``left hand side'' of QCD sum rules. For the isovector channel we find a significant enhancement of the in-medium spectral density below the $\\rho$ resonance while the mass of $\\rho$ meson itself decreases only slightly. The situation is different in the isoscalar channel. Here the mass and therefore the peak position of the $\\omega$ meson decreases strongly while the width increases less drastically than in the $\\rho$ meson case. For the $\\phi$ meson we find almost no mass shift, the width of the peak broadens due to the imaginary part of the scattering length. We find a remarkable degree of consistency with the operator product expansion of QCD sum rules in all three channels.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1997-02-04T09:41:09.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "qcd sum rules",
      "nuclear matter",
      "s-wave vector meson-nucleon scattering amplitudes",
      "low energy part",
      "current-current correlation function"
    ],
    "note": {
      "typesetting": "LaTeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 440125,
      "adsabs": "1997hep.ph....2240K"
    }
  }
}