{
  "annotation_id": "f0c8fad8-ae6c-4b7d-9781-591ad9e52f30",
  "date_created": "2026-03-02T18:00:10.885000Z",
  "date_modified": "2026-03-02T18:00:10.885000Z",
  "file_hash": "3d5fe00f0d3cbbd32968a7468e43c58b7a6668901c395e0904fb8d3b3b3169b7",
  "private": false,
  "record": {
    "abstract": "An interesting accident of nature is that the peak of the cosmic ray\nspectrum, for both protons and heavier nuclei, occurs near the pion production\nthreshold. The Boltzmann transport equation contains a term which is the cosmic\nray flux multiplied by the cross section. Therefore when considering pion and\nkaon production from proton-proton reactions, small cross sections at low\nenergy can be as important as larger cross sections at higher energy. This is\nalso true for subthreshold kaon production in nuclear collisions, but not for\nsubthreshold pion production.",
    "arxiv_id": "nucl-th/0612048",
    "authors": [
      "John W. Norbury",
      "Lawrence W. Townsend",
      "Ryan B. Norman"
    ],
    "categories": [
      "nucl-th",
      "astro-ph",
      "physics.space-ph"
    ],
    "doi": "10.1088/0954-3899/34/1/007",
    "journal_ref": "J.Phys.G34:115-122,2007",
    "title": "Threshold meson production and cosmic ray transport",
    "url": "https://arxiv.org/abs/nucl-th/0612048"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "aa6fdf09-3cf7-45d0-b946-5a29e2db9852",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}