{
  "annotation_id": "55df4720-1a91-4c45-8ce8-9de7e0a0bf85",
  "date_created": "2026-03-02T18:00:32.669000Z",
  "date_modified": "2026-03-02T18:00:32.669000Z",
  "file_hash": "b4155037f350a976452b14be7708503f72559018aeeea881e4f8876405251b6e",
  "private": false,
  "record": {
    "abstract": "We use a rotatable torsion balance to perform an equivalence principle test\non a magnetically shielded spin-polarized body of HoFe_{3}. With a rotation\nperiod of one hour, the period of possible signal is reduced from one solar day\nby 24 times, and hence the 1/f noise is greatly reduced. Our present\nexperimental results gives a limit (0.25 +- 1.26) X 10^{-9} on the Eotvos\nparameter \\eta of equivalence of the polarized body compared with unpolarized\naluminium-brass cylinders in the solar gravitional field, and a limit (0.34 +-\n0.52) X 10^{-9} in the earth gravitional fields. This improves the previous\nlimit on polarized bodies by a factor of 45 for solar field and by a factor of\n11 for earth field.",
    "arxiv_id": "physics/0009013",
    "authors": [
      "Li-Shing Hou",
      "Wei-Tou Ni"
    ],
    "categories": [
      "physics.space-ph"
    ],
    "doi": "10.1142/S0217732301003619",
    "title": "Rotatable-Torsion-Balance Equivalence Principleexperiment for the   Spin-Polarized Hofe_{3}",
    "url": "https://arxiv.org/abs/physics/0009013"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d6642399-a03f-411b-8b7a-84a01c2a7b6a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}