{
  "annotation_id": "13e5306d-18d6-47d9-a467-1e1210fb0f38",
  "date_created": "2026-03-02T18:00:18.712000Z",
  "date_modified": "2026-03-02T18:00:18.712000Z",
  "file_hash": "c1c8050066f5d35406683179241dc1a61583ed7cddbd1abb1b8c623b4dddaf44",
  "private": false,
  "record": {
    "abstract": "We analyze the process $e p \\to e p \\phi$ near the threshold within $uud -\ns\\bar s$ cluster model as a probe of the strangeness content of proton. Our\nconsideration is based on the relativistic harmonic oscillator quark model\nwhich takes into account the Lorentz-contraction effect of the hadron\nwavefunctions. We find that the knockout mechanisms are comparable to the\ndiffractive production of vector-meson-dominance model when only (3-5)% strange\nquark admixture is assumed, which should be compared with (10-20)% of the\nnonrelativistic quark model prediction. The cross sections of the $uud$- and\n$s\\bar s$-knockout processes have qualitatively different dependence on the\nfour-momentum transfer squared to the proton and may be distinguished\nexperimentally. We also briefly discuss a way to determine the strangeness\ncontent of proton in 5-quark cluster model.",
    "arxiv_id": "nucl-th/9612059",
    "authors": [
      "Alexander I. Titov",
      "Shin Nan Yang",
      "Yongseok Oh"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1016/S0375-9474(97)00022-5",
    "journal_ref": "Nucl.Phys. A618 (1997) 259-290",
    "title": "Electroproduction of phi meson from proton and the strangeness in the   nucleon",
    "url": "https://arxiv.org/abs/nucl-th/9612059"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "20a4a887-0ea7-46ca-b116-473d917ba234",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}