{
  "annotation_id": "93fb4a98-4a4b-41f2-874e-2d2ed3351206",
  "date_created": "2026-03-02T18:00:28.759000Z",
  "date_modified": "2026-03-02T18:00:28.759000Z",
  "file_hash": "f1538456c63de0cc9a13fdff179f0bd0c1682cc1a1d82a46b4aa8d49d847ec3f",
  "private": false,
  "record": {
    "abstract": "We consider the role of hadronic rescattering of daughter kaons on the\nobserved mass spectra from $\\phi$ meson decays in ultra-relativistic heavy ion\ncollisions. A hadronic cascade code (RQMD v2.4) shows that $\\sim$26% of all\n$\\phi$\u0027s decaying to $K^+K^-$ in central Pb+Pb collisions at SPS energies\n($E_{beam} = 158 GeV/A$) have a rescattered or absorbed daughter. This\nsignificantly affects the reconstructed invariant mass of the pair and shifts\n$\\phi$ mesons out of the mass peak. Kaon rescattering depletes the low velocity\nregion, hardening and broadening the observed phi $m_t$ and rapidity\ndistributions respectively, relative to the dilepton channel. This effect\nproduces an apparent change in the experimentally determined branching ratio\nnot necessarily related to chiral symmetry restoration. Comparisons to recent\nexperimental measures at CERN energies reveal a possible mechanism to account\nfor the shape of the observed spectra, though not their absolute relative\nmagnitude.",
    "arxiv_id": "nucl-th/9909075",
    "authors": [
      "Stephen Johnson",
      "Barbara Jacak",
      "Axel Drees"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1007/s100520100569",
    "journal_ref": "Eur.Phys.J.C18:645-649,2001",
    "title": "Rescattering of Vector Meson Daughters in High Energy Heavy Ion   Collisions",
    "url": "https://arxiv.org/abs/nucl-th/9909075"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5425c035-4340-40df-a0eb-8d6b424235f4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}