{
  "annotation_id": "f2e0d8f4-c579-4304-9d56-a9d29d57ed6c",
  "date_created": "2026-03-02T18:00:04.004000Z",
  "date_modified": "2026-03-02T18:00:04.004000Z",
  "file_hash": "aa66fd331d2b57a9a95093b898e8b0bae9d8b2244c606f7fbcb134d26f3dc4b6",
  "private": false,
  "record": {
    "abstract": "An excellent description of both spin-independent and spin-dependent quark\ndistributions and structure functions has been obtained with a modified\nNambu-Jona-Lasinio model, which is free of unphysical thresholds for nucleon\ndecay into quarks - hence incorporating an important aspect of confinement. We\nutilize this model to investigate nuclear medium modifications to structure\nfunctions and find that we are readily able to reproduce both nuclear matter\nsaturation and the experimental F^A_2N / F_2N ratio, that is, the EMC effect.\nApplying this framework to determine g^A_1p, we find that the ratio g^A_1p /\ng_1p differs significantly from 1, with the quenching caused by the nuclear\nmedium being about twice that of the spin-independent case. This represents an\nexciting result, which if confirmed experimentally, will reveal much about the\nquark structure of nuclear matter.",
    "arxiv_id": "nucl-th/0504019",
    "authors": [
      "I. C. Cloet",
      "W. Bentz",
      "A. W. Thomas"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevLett.95.052302",
    "journal_ref": "Phys.Rev.Lett.95:052302,2005",
    "title": "Spin-dependent structure functions in nuclear matter and the polarized   EMC effect",
    "url": "https://arxiv.org/abs/nucl-th/0504019"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1c5348a5-0586-4fe4-8d0c-a9bf896d7ab6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}