{
  "id": "nucl-th/9709008",
  "version": "v1",
  "published": "1997-09-05T18:41:14.000Z",
  "updated": "1997-09-05T18:41:14.000Z",
  "title": "A Microscopic Calculation of Photoabsorption Cross Sections on Protons and Nuclei",
  "authors": [
    "R. Rapp",
    "M. Urban",
    "M. Buballa",
    "J. Wambach"
  ],
  "comment": "10 pages RevTeX, 2 eps-figures",
  "journal": "Phys.Lett.B417:1-6,1998",
  "doi": "10.1016/S0370-2693(97)01360-9",
  "categories": [
    "nucl-th"
  ],
  "abstract": "A recently developed model for $\\rho$-meson propagation in dense hadronic matter is applied to total photoabsorption cross sections in $\\gamma$-proton and $\\gamma$-nucleus reactions. Within the vector dominance model the photon coupling to the virtual pion cloud of the nucleon, two-body meson-exchange currents, as well as $\\gamma$-nucleon resonances are included. Whereas the $\\gamma p$ reaction is determined by the low-density limit of the model, higher orders in the nuclear density are important to correctly account for the experimental spectra observed on both light and heavy nuclei over a wide range of photon energies, including the region below the pion threshold. In connection with soft dilepton spectra in high-energy heavy-ion collisions we emphasize the importance of photoabsorption to further constrain the parameters of the model.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1997-09-05T18:41:14.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "25.20.Dc",
      "12.40.Vv",
      "21.65.+f"
    ],
    "keywords": [
      "microscopic calculation",
      "total photoabsorption cross sections",
      "two-body meson-exchange currents",
      "high-energy heavy-ion collisions",
      "soft dilepton spectra"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "RevTeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 448066
    }
  }
}