{
  "annotation_id": "51a4e45d-154a-4ef7-97c4-eb3130dfa05b",
  "date_created": "2026-03-02T18:00:24.940000Z",
  "date_modified": "2026-03-02T18:00:24.940000Z",
  "file_hash": "1e542282a0004f90b05398a7ff90e2fc63a9bbae6abe1ab8f8bbbde23e5c417e",
  "private": false,
  "record": {
    "abstract": "We compute the Coulomb distortion produced by an expanding and highly charged\nfireball on the spectra of low transverse momenta and mid rapidity pions\nproduced in central high energy heavy ion collisions. We compare to data on\nAu+Au at 11.6A GeV from E866 at the BNL AGS and of Pb+Pb at 158A GeV from NA44\nat the CERN SPS. We match the fireball expanison velocity with the average\ntransverse momentum of protons and find a best fit to the charged pion ratio\nwhen the fireball radius is about 10 fm at freeze-out. This value is common to\nboth AGS and SPS data.",
    "arxiv_id": "nucl-th/9907070",
    "authors": [
      "Alejandro Ayala",
      "Sangyong Jeon",
      "Joseph Kapusta"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1016/S0375-9474(99)85091-X",
    "journal_ref": "Nucl.Phys. A661 (1999) 573-576",
    "title": "Coulomb distortion of pi+/pi- as a tool to determine the fireball radius   in central high energy heavy ion collisions",
    "url": "https://arxiv.org/abs/nucl-th/9907070"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6ee93dd4-07d1-4fee-ae0f-da18530d2435",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}