{
  "annotation_id": "92a33f31-a615-4396-9ead-e243604a3471",
  "date_created": "2026-03-02T18:00:22.246000Z",
  "date_modified": "2026-03-02T18:00:22.246000Z",
  "file_hash": "354307439fec1b992af8fd5ac3684b11c29765421d31ffda44569dfa1f86832f",
  "private": false,
  "record": {
    "abstract": "The polarization observables in phi meson photoproduction is studied to probe\nthe strangeness content of the nucleon. In addition to the dominant diffractive\nproduction and the one-pion-exchange process, we take into account the direct\nknockout mechanism that arises from the possible hidden strangeness content of\nthe nucleon. We find that some double polarization observables are very\nsensitive to the strangeness content of the proton because of the different\nspin structures of the amplitudes associated with different mechanisms. This\nsuggests that such measurements could be very useful in probing the strangeness\ncontent in the proton. The orbitally excited quark-cluster configurations in\nthe proton are included in the calculation and found to have little effect.",
    "arxiv_id": "nucl-th/9804043",
    "authors": [
      "Alexander I. Titov",
      "Yongseok Oh",
      "Shin Nan Yang",
      "Tosiyuki Morii"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1103/PhysRevC.58.2429",
    "journal_ref": "Phys.Rev.C58:2429-2449,1998",
    "title": "Photoproduction of phi mesons from the proton: Polarization observables   and strangeness in the nucleon",
    "url": "https://arxiv.org/abs/nucl-th/9804043"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a1433e84-5ec9-4ce2-8eda-53d28f5d1ffc",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}