{
  "id": "nucl-th/9611037",
  "version": "v1",
  "published": "1996-11-18T20:48:05.000Z",
  "updated": "1996-11-18T20:48:05.000Z",
  "title": "Dilepton production in proton-nucleus and nucleus-nucleus collisions at SPS energies",
  "authors": [
    "G. Q. Li",
    "C. M. Ko",
    "G. E. Brown",
    "H. Sorge"
  ],
  "comment": "RevTeX, 45 pages, including 21 postscript figures, to be published in Nuclear Physics A",
  "journal": "Nucl.Phys. A611 (1996) 539-567",
  "categories": [
    "nucl-th"
  ],
  "abstract": "Dilepton production in proton- and nucleus-induced reactions is studied in relativistic transport model using initial conditions determined by the string dynamics from RQMD. It is found that both the CERES and HELIOS-3 data for dilepton spectra in proton-nucleus reactions can be well described by the `conventional' mechanism of Dalitz decay and direct vector meson decay. However, to provide a quantitative explanation of the observed dilepton spectra in central S+Au and S+W collisions requires contributions other than these direct decays. Introducing a decrease of vector meson masses in hot and dense medium, we find that these heavy-ion data can also be satisfactorily explained. This agrees with our earlier conclusions based on a fire cylinder model. We also give predictions for Pb+Au collisions at 160 GeV/nucleon using current CERES mass resolution and acceptance.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1996-11-18T20:48:05.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "25.75.Dw",
      "24.10.Jv",
      "13.40.Gp"
    ],
    "keywords": [
      "dilepton production",
      "nucleus-nucleus collisions",
      "sps energies",
      "direct vector meson decay",
      "current ceres mass resolution"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1016/S0375-9474(96)00318-1"
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 45,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 426098
    }
  }
}