{
  "annotation_id": "14aba52a-c51e-4ecb-bd57-1f00b6597c4d",
  "date_created": "2026-03-02T18:00:18.395000Z",
  "date_modified": "2026-03-02T18:00:18.395000Z",
  "file_hash": "2d87dc16bcc9a52a56df988b4031d0bec43f3738724eb62882e1a2587b3d730e",
  "private": false,
  "record": {
    "abstract": "We point out that formation time of pions produced in heavy ion collisions\nmodifies the mass spectrum of dileptons produced via pipi -\u003e ee annihilation.\nIncreasing formation time enhances the production of dileptons with lower\nmasses. The effect offers an explanation of a part of the enhanced production\nof dileptons below the rho-meson mass as observed by the CERES and HELIOS\nCollaborations at the CERN SPS.",
    "arxiv_id": "nucl-th/9705051",
    "authors": [
      "Peter Filip",
      "Jan Pisut"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0370-2693(97)01019-8",
    "journal_ref": "Phys.Lett. B411 (1997) 187-192",
    "title": "Hadron Formation Time and Dilepton Mass Spectra in Heavy Ion Collisions",
    "url": "https://arxiv.org/abs/nucl-th/9705051"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "aeaac249-affa-4673-ba89-719e11864fca",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}