{
  "id": "nucl-th/9702053",
  "version": "v1",
  "published": "1997-02-27T10:57:26.000Z",
  "updated": "1997-02-27T10:57:26.000Z",
  "title": "Particle Production from SIS to SPS Energies",
  "authors": [
    "W. Cassing"
  ],
  "comment": "14 pages, LaTeX, 9 postscript figures included, Proc. of the Int. Research Workshop \"Heavy-Ion Physics at Low, Intermediate and Relativistic Energies using $4\\pi$ Detectors\", Poiana Brasov, Romania, Oct. 7-14, 1996, World Scientific, Singapore, 1997, in press",
  "categories": [
    "nucl-th"
  ],
  "abstract": "The production and propagation of mesons ($\\pi, \\eta, \\rho, \\omega, \\Phi, K, \\bar{K}, J/\\Psi$) in proton-nucleus and nucleus-nucleus collisions from 1 - 200 GeV/u is studied within the covariant transport approach HSD, which explicitly allows to investigate selfenergy effects of the hadrons at finite baryon density. Whereas the experimental pion and $K^+$ spectra can be described without introducing any selfenergies for the mesons, the $K^-$ yield in Ni + Ni collisions is underestimated by a factor of 5 - 7 at 1.66 and 1.85 GeV/u. However, introducing density dependent antikaon masses in line with effective chiral Lagrangians a satisfactory agreement with the data is achieved. A dropping of the $\\rho$-meson mass with baryon density, as suggested by QCD sumrule studies, is proposed to explain the dilepton spectra for S + Au and Pb + Au at SPS energies, which indicates independently that a partial restoration of chiral symmetry might be found already in the present experiments.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1997-02-27T10:57:26.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "sps energies",
      "particle production",
      "covariant transport approach hsd",
      "introducing density dependent antikaon masses",
      "qcd sumrule studies"
    ],
    "note": {
      "typesetting": "LaTeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 440768,
      "adsabs": "1997nucl.th...2053C"
    }
  }
}