{
  "annotation_id": "30eed06b-ebba-4425-9bb2-760c7e0f94d3",
  "date_created": "2026-03-02T18:00:18.845000Z",
  "date_modified": "2026-03-02T18:00:18.845000Z",
  "file_hash": "3de1fc7140660df2e4a409bc0a77a5b44a9e3993ff99b2e21648e52715f93e75",
  "private": false,
  "record": {
    "abstract": "We analyse the production and propagation of kaons and antikaons in Ni + Ni\nreactions from 0.8--1.85 GeV/u within a coupled channel transport approach\nincluding the channels $BB \\to K^+YN, \\pi B\\to K^+Y, BB \\to NN K \\bar{K}, \\pi\nB\\to N K\\bar{K}, K^+B\\to K^+B, \\bar{K} B\\to \\bar{K}B, Y N\\to \\bar{K} NN, \\pi\n\\pi\\to K \\bar{K}$ as well as $\\pi Y\\to \\bar{K}N$ and $\\bar{K} N\\to \\pi Y$ for\nthe antikaon absorption. Whereas the experimental $K^+$ spectra can be\nreproduced without introducing any selfenergies for the mesons in Ni + Ni\ncollisions from 0.8 to 1.8 GeV/u, the $K^-$ yield is underestimated by a factor\nof 5--7 at 1.66 and 1.85 GeV/u. However, introducing density dependent antikaon\nmasses as proposed by Kaplan and Nelson, the antikaon spectra can be reasonably\nwell described.",
    "arxiv_id": "nucl-th/9609050",
    "authors": [
      "W. Cassing",
      "E. L. Bratkovskaya",
      "U. Mosel",
      "S. Teis",
      "A. Sibirtsev"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0375-9474(96)00461-7",
    "journal_ref": "Nucl.Phys.A614:415-432,1997",
    "title": "Kaon versus Antikaon Production at SIS Energies",
    "url": "https://arxiv.org/abs/nucl-th/9609050"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "29d832d4-9b04-430e-8ec4-e3437c6cb504",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}