{
  "annotation_id": "ce0e91ba-9c83-4e68-b40c-7b1328b1b447",
  "date_created": "2026-03-02T18:00:21.657000Z",
  "date_modified": "2026-03-02T18:00:21.657000Z",
  "file_hash": "f577805127e4ea3a8f72f2131356eb7c37ddb4dccbb8eb36a40b0ff9e6e3bbbc",
  "private": false,
  "record": {
    "abstract": "The effect of in-medium vector and axial-vector meson masses on photon\nproduction is studied. We assume that the effective mass of a vector meson in\nhot nuclear matter decreases according to a universal scaling law, while that\nof an axial-vector meson is given by Weinberg\u0027s mass formula. We find that the\nthermal production rate of photons increases with reduced masses, and is\nenhanced by an order of magnitude at T=160 MeV with $m_\\rho=300$ MeV. Assuming\na hydrodynamic evolution, we estimate the effect of the reduced masses on\nphoton production in nucleus-nucleus collisions. The result is compared to\nexperimental data from the WA80/WA98 collaboration.",
    "arxiv_id": "nucl-th/9802068",
    "authors": [
      "Chung-sik Song",
      "George Fai"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.58.1689",
    "journal_ref": "Phys.Rev.C58:1689-1697,1998",
    "title": "Medium effect on photon production in ultrarelativistic nuclear   collisions",
    "url": "https://arxiv.org/abs/nucl-th/9802068"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "af6d65d7-6322-4a86-80f4-45d4c6c74889",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}