{
  "annotation_id": "5ddff6f1-b7b1-439c-9607-f6ed8cdea259",
  "date_created": "2026-03-02T18:00:11.736000Z",
  "date_modified": "2026-03-02T18:00:11.736000Z",
  "file_hash": "23f9ea4b545ac86bafd1f66cdf59c684739c6a7881e12075066c08e687fd3f7b",
  "private": false,
  "record": {
    "abstract": "Causal viscous hydrodynamic fits to experimental data for pion and kaon\ntransverse momentum spectra from central Au+Au collisions at \\sqrt{s_{NN}}=200\nGeV are presented. Starting the hydrodynamic evolution at 1 fm/c and using\nsmall values for the relaxation time, reasonable fits up to moderate ratios\n\\eta/s\\simeq 0.4 can be obtained. It is found that a percentage of roughly 50\n\\eta/s to 75 \\eta/s of the final meson multiplicity is due to viscous entropy\nproduction. Finally, it is shown that with increasing viscosity, the ratio of\nHBT radii R_{out}/R_{side} approaches and eventually matches the experimental\ndata.",
    "arxiv_id": "nucl-th/0701032",
    "authors": [
      "Paul Romatschke"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1140/epjc/s10052-007-0354-z",
    "journal_ref": "Eur.Phys.J.C52:203-209,2007",
    "title": "Causal Viscous Hydrodynamics for Central Heavy-Ion Collisions II: Meson   Spectra and HBT Radii",
    "url": "https://arxiv.org/abs/nucl-th/0701032"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "bdef9614-d7ea-48f7-b1c5-203f01b6aa54",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}