{
  "annotation_id": "a8162f5f-62be-43c6-8a49-951be0a2de90",
  "date_created": "2026-03-02T18:00:14.169000Z",
  "date_modified": "2026-03-02T18:00:14.169000Z",
  "file_hash": "c13d3fe7e85e81ceaf1491f42928b9e3df62bdb8a3a14d7d34ee9ad868960859",
  "private": false,
  "record": {
    "abstract": "Meson-exchange current (MEC) contributions to the parity-violating (PV)\nasymmetry for elastic scattering of polarized electrons from $^4$He are\ncalculated over a range of momentum transfer using Monte Carlo methods and a\nvariational $^4$He ground state wavefunction. The results indicate that MEC\u0027s\ngenerate a negligible contribution to the asymmetry at low-$|\\qv|$, where a\ndetermination of the nucleon\u0027s mean square strangeness radius could be carried\nout at CEBAF. At larger values of momentum transfer -- beyond the first\ndiffraction minimum -- two-body corrections from the $\\rho$-$\\pi$ \\lq\\lq\nstrangeness charge\" operator enter the asymmetry at a potentially observable\nlevel, even in the limit of vanishing strange-quark matrix elements of the\nnucleon. For purposes of constraining the nucleon\u0027s strangeness electric form\nfactor, theoretical uncertainties associated with these MEC contributions do\nnot appear to impose serious limitations.",
    "arxiv_id": "nucl-th/9405012",
    "authors": [
      "M. J. Musolf",
      "R. Schiavilla",
      "T. W. Donnelly"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1103/PhysRevC.50.2173",
    "journal_ref": "Phys.Rev.C50:2173-2188,1994",
    "title": "Many-Body Currents and the Strange-Quark Content of 4he",
    "url": "https://arxiv.org/abs/nucl-th/9405012"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ba52e918-4d3d-4ec6-a395-980b104c3385",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}