{
  "annotation_id": "cce7a9e4-8513-41a5-984d-5daa3a0f99cf",
  "date_created": "2026-03-02T18:00:39.218000Z",
  "date_modified": "2026-03-02T18:00:39.218000Z",
  "file_hash": "6cf94cb4fd26b8196cc3fd1d600b31ec48ac3b6d420b650c05682301d812b0af",
  "private": false,
  "record": {
    "abstract": "A direct measurement of the relative orientation between the spin and\nmagnetic moment of the electron seems to be never performed. The kinematical\ntheory of elementary particles developed by the author and the analysis of the\nexpectation value of Dirac\u0027s magnetic moment operator show that, contrary to\nthe usual assumption, spin and magnetic moment of electrons and positrons might\nhave the same relative orientation. Two plausible experiments for their\nrelative orientation measurement are proposed.",
    "arxiv_id": "physics/0112057",
    "authors": [
      "Martin Rivas"
    ],
    "categories": [
      "physics.gen-ph",
      "physics.class-ph"
    ],
    "title": "Are the electron spin and magnetic moment parallel or antiparallel   vectors?",
    "url": "https://arxiv.org/abs/physics/0112057"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "17e17acd-6b34-4c23-ac76-810e87e717bf",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}