{
  "annotation_id": "7ebb0153-c938-4f3b-a740-fc2e916bdf75",
  "date_created": "2026-03-02T18:00:01.084000Z",
  "date_modified": "2026-03-02T18:00:01.084000Z",
  "file_hash": "b0198d349e7ca6b1b21bb21dee820bc948032327e4f71297f96ff34e78416266",
  "private": false,
  "record": {
    "abstract": "Long-standing anomalies in K^+ nucleus integral cross sections could be\nresolved by extending the impulse-approximation t*rho optical-potential\nframework to incorporate K^+ absorption on pairs of nucleons. Substantially\nimproved fits to the data at p(lab)=500-700 MeV/c are obtained. An upper bound\nof 3.5 mb for the absorption cross section of K^+ per nucleon is derived. We\nconjecture that the underlying microscopic absorption process is K^+ n N --\u003e\nTheta^+ N, where Theta^+(1540) is the newly discovered exotic Y=2, I=0, Z=1\npentaquark baryon, and estimate that the cross section for K^+ d --\u003e Theta^+ p\nis a fraction of millibarn. Comments are made on Theta^+ production reactions\non nuclei.",
    "arxiv_id": "nucl-th/0411052",
    "authors": [
      "A. Gal",
      "E. Friedman"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1103/PhysRevLett.94.072301",
    "journal_ref": "Phys.Rev.Lett. 94 (2005) 072301",
    "title": "Traces of Theta^+ pentaquark in K^+ nucleus dynamics",
    "url": "https://arxiv.org/abs/nucl-th/0411052"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fa5e8e2b-d79e-431b-9af7-5a9c46aed3ed",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}