{
  "annotation_id": "416da17c-aebc-43f1-be1e-5e7691b28184",
  "date_created": "2026-03-02T18:00:25.669000Z",
  "date_modified": "2026-03-02T18:00:25.669000Z",
  "file_hash": "2a6d9c0d3ec633df2975d82e5bb61dcecdd7f850da46b0e0b83744ab36d1f4b5",
  "private": false,
  "record": {
    "abstract": "The neutron charge form factor GEn(Q**2) is investigated within a constituent\nquark model formulated on the light-front. It is shown that, if the quark\ninitial motion is neglected in the Melosh rotations, the Dirac neutron form\nfactor F1n(Q**2)$ receives a relativistic correction which cancels exactly\nagainst the Foldy term in GEn(Q**2), as it has been recently argued by Isgur.\nMoreover, at the same level of approximation the ratio of the proton to neutron\nmagnetic form factors GMp(Q**2) / GMn(Q**2) is still given by the naive\nSU(6)-symmetry expectation, -3/2. However, it is also shown that the full\nMelosh rotations break SU(6) symmetry, giving rise to GEn(Q**2) =/ 0 and\nGMp(Q**2)/GMn(Q**2) =/ -3/2 even when a SU(6)-symmetric canonical wave function\nis assumed. It turns out that relativistic effects alone cannot explain\nsimultaneously the experimental data on GEn(Q**2)$ and GMp(Q**2)/GMn(Q**2).",
    "arxiv_id": "nucl-th/9906095",
    "authors": [
      "Fabio Cardarelli",
      "Silvano Simula"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1016/S0370-2693(99)01146-6",
    "journal_ref": "Phys.Lett. B467 (1999) 1-7",
    "title": "Relativistic effects on the neutron charge form factor in the   constituent quark model",
    "url": "https://arxiv.org/abs/nucl-th/9906095"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "858d55c0-2590-4292-a93e-ddc2416869ac",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}