{
  "annotation_id": "621a7a41-de59-497b-9ad8-b08b24b515bc",
  "date_created": "2026-03-02T18:00:18.667000Z",
  "date_modified": "2026-03-02T18:00:18.667000Z",
  "file_hash": "f0c4a4a827a622f4ccc06af5acf7b618875838b71d521b6e6ac9d1630e805564",
  "private": false,
  "record": {
    "abstract": "We present a dynamical study of $e^+e^-$ and $\\mu^+ \\mu^-$ production in\nproton-nucleus and nucleus-nucleus collisions at CERN-SPS energies on the basis\nof the covariant transport approach HSD employing a momentum-dependent\n$\\rho$-meson spectral function that includes the pion modifications in the\nnuclear medium as well as the polarization of the $\\rho$-meson due to resonant\n$\\rho$$-N$ scattering. We find that the experimental data from the CERES and\nHELIOS-3 Collaborations can be described equally well as within the dropping\n$\\rho$-mass scenario. Whereas corresponding dilepton $q_T$-spectra are found to\nbe very similar, the inclusive dilepton yield in the invariant mass range $0.85\n\\leq M \\leq 1.0$ GeV should allow to disentangle the two scenarios\nexperimentally.",
    "arxiv_id": "nucl-th/9708020",
    "authors": [
      "W. Cassing",
      "E. L. Bratkovskaya",
      "R. Rapp",
      "J. Wambach"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.57.916",
    "journal_ref": "Phys.Rev.C57:916-921,1998",
    "title": "Probing the Rho Spectral Function in Hot and Dense Nuclear Matter by   Dileptons",
    "url": "https://arxiv.org/abs/nucl-th/9708020"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "815dd0e3-6afe-4d0a-9d99-9cce9f44564c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}