{
  "annotation_id": "cca6d105-7ddb-4d55-a8b2-461bad833f86",
  "date_created": "2026-03-02T18:00:18.289000Z",
  "date_modified": "2026-03-02T18:00:18.289000Z",
  "file_hash": "092126aac12938b98550d88cc8655e58753072c6de2a80db900acb406dc54259",
  "private": false,
  "record": {
    "abstract": "Transverse expansion of centrally produced matter in Pb on Pb collisions at\nbeam energies around 158 AGeV appears to be rather `soft\u0027. Two possible reasons\n-- an extended preequilibrium stage and a first order phase transition from a\nquark-gluon-plasma into hadronic matter -- are discussed. The softening of\ntransverse expansion caused by preequilibrium dynamics is estimated with the\naid of the transport model RQMD which does not contain a first order phase\ntransition. It is found that the anisotropy of transverse flow in non-central\nreactions is very different in the preequilibrium and hydrodynamic scenarios\neven if the latter are based on a strong 1st order transition.",
    "arxiv_id": "nucl-th/9701012",
    "authors": [
      "H. Sorge"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0370-2693(97)00474-7",
    "journal_ref": "Phys.Lett. B402 (1997) 251-256",
    "title": "Soft transverse expansion in Pb(158 AGeV) on Pb collisions:   preequilibrium motion or 1st order phase transition?",
    "url": "https://arxiv.org/abs/nucl-th/9701012"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6d6201ee-1ef0-47e1-a168-b78c9786d877",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}