{
  "annotation_id": "1150960b-711b-466c-9cca-15b6d701d3a6",
  "date_created": "2026-03-02T18:00:18.787000Z",
  "date_modified": "2026-03-02T18:00:18.787000Z",
  "file_hash": "801cef0843dea6ae3c64509cd5170607f40eab3ec4ffa05e72a88249b85d22ba",
  "private": false,
  "record": {
    "abstract": "Dilepton and photon production in heavy-ion collisions at SPS energies are\nstudied in the relativistic transport model that incorporates self-consistently\nthe change of hadron masses in dense matter. It is found that the dilepton\nspectra in proton-nucleus reactions can be well described by the conventional\nmechanism of Dalitz decay and direct vector meson decay. However, to provide a\nquantitative explanation of the observed dilepton spectra in central heavy-ion\ncollisions requires contributions other than these direct decays and also\nvarious medium effects. Introducing a decrease of vector meson masses in hot\ndense medium, we find that these heavy-ion data can be satisfactorily\nexplained. Furthermore, the single photon spectra in our calculations with\neither free or in-medium meson masses do not exceed the upper bound deduced\nfrom the experiments by the WA80 Collaboration.",
    "arxiv_id": "nucl-th/9706022",
    "authors": [
      "G. Q. Li",
      "G. E. Brown",
      "C. M. Ko"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0375-9474(97)00795-1",
    "journal_ref": "Nucl.Phys. A630 (1998) 563-570",
    "title": "Electromagnetic probes of dense matter in heavy-ion collisions",
    "url": "https://arxiv.org/abs/nucl-th/9706022"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2650921b-2f70-4d44-ab3f-b3d8e023da4b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}