{
  "annotation_id": "c4b77b3e-8494-4515-8743-c3876d9a2b08",
  "date_created": "2026-03-02T18:00:25.269000Z",
  "date_modified": "2026-03-02T18:00:25.269000Z",
  "file_hash": "6da211e55ca47926859377a0a65835270c2c2b0a1604e9273d561f1f26718a76",
  "private": false,
  "record": {
    "abstract": "We compute the pion inclusive momentum distribution in heavy-ion collisions\nat AGS energies, assuming thermal equilibrium and accounting for density and\nexpansion effects at the time of decoupling. We compare to data on mid rapidity\ncharged pions produced in central Au + Au collisions and find a very good\nagreement. The shape of the distribution at low $m_t-m$ is explained in part as\nan effect arising from the high mean pion density achieved in these reactions.\nThe difference between the positive and negative pion distributions in the same\nregion is attributed in part to the different average yields of each kind of\ncharged pions.",
    "arxiv_id": "nucl-th/9812052",
    "authors": [
      "Alejandro Ayala",
      "Julio Barreiro",
      "Luis M. Monta\u00f1o"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1103/PhysRevC.60.014904",
    "journal_ref": "Phys.Rev. C60 (1999) 014904",
    "title": "Density and expansion effects on pion spectra in relativistic heavy-ion   collisions",
    "url": "https://arxiv.org/abs/nucl-th/9812052"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "56032c61-605a-436a-9544-bbec6b1e8ed7",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}