{
  "annotation_id": "be4a99b5-f762-48a5-9d78-170f1e40119d",
  "date_created": "2026-03-02T18:00:17.862000Z",
  "date_modified": "2026-03-02T18:00:17.862000Z",
  "file_hash": "aa36a2a4867997f1947d0230e3b6d81dce75e535e4b790984d074b1626e5cffe",
  "private": false,
  "record": {
    "abstract": "The production of low mass dileptons and soft photons from thermalized Quark\nGluon Plasma (QGP) and hadronic matter in relativistic heavy ion collisions is\nevaluated. A boost invariant longitudinal and cylindrically symmetric\ntransverse expansion of the systems created in central collision of lead nuclei\nat CERN SPS, BNL RHIC, and CERN LHC, and undergoing a first order phase\ntransition to hadronic matter is considered. A large production of low mass (M\u003c\n0.3 GeV) dileptons, and soft photons (p_T\u003c 0.4 GeV) is seen to emanate from the\nbremsstrahlung of quarks and pions. We find an increase by a factor of 2--4 in\nthe low mass dilepton and soft photon yield as we move from SPS to RHIC\nenergies, and an increase by an order of magnitude as we move from SPS to LHC\nenergies. Most of the soft radiations are found to originate from pion driven\nprocesses at SPS and RHIC energies, while at the LHC energies the quark and the\npion driven processes contribute by a similar amount. The study of the\ntransverse mass distribution is seen to provide interesting details of the\nevolution. We also find a unique universal behaviour for the ratio of M^2\nweighted transverse mass distribution for M= 0.1 GeV to that for M= 0.2 and 0.3\nGeV, as a function of M_T, for SPS, RHIC, and LHC energies, in the absence of\ntransverse expansion of the system. A deviation from this universal behaviour\nis seen as a clear indication of the flow.",
    "arxiv_id": "nucl-th/9612039",
    "authors": [
      "Dipali Pal",
      "Pradip Kumar Roy",
      "Sourav Sarkar",
      "Dinesh Kumar Srivastava",
      "Bikash Sinha"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.55.1467",
    "journal_ref": "Phys.Rev.C55:1467-1476,1997",
    "title": "Soft Electromagnetic Radiations from Relativistic Heavy Ion Collisions",
    "url": "https://arxiv.org/abs/nucl-th/9612039"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "01f6afbf-4709-4de0-aad3-adc8fa0e2cca",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}