{
  "annotation_id": "6f4eb7d6-3878-49e5-8db5-b6235e4ef5c4",
  "date_created": "2026-03-02T18:02:13.327000Z",
  "date_modified": "2026-03-02T18:02:13.327000Z",
  "file_hash": "14587edcc3fa3217c5e99e51c96ac4a716ca66133c077af620f11a6471ad8074",
  "private": false,
  "record": {
    "abstract": "The size of the helium trimer is determined by diffracting a beam of He-4\nclusters from a 100 nm grating inclined by 21 degree. Due to the bar thickness\nthe projected slit width is roughly halved to 27 nm, increasing the sensitivity\nto the trimer size. The peak intensities measured out to the 8th order are\nevaluated via a few-body scattering theory. The trimer pair distance is found\nto be 1.1+0.4/-0.5 nm in agreement with predictions for the ground state. No\nevidence for a significant amount of Efimov trimers is found. Their\nconcentration is estimated to be less than 6%.",
    "arxiv_id": "quant-ph/0412064",
    "authors": [
      "R. Bruehl",
      "A. Kalinin",
      "O. Kornilov",
      "J. P. Toennies",
      "G. C. Hegerfeldt",
      "M. Stoll"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.95.063002",
    "journal_ref": "Phys. Rev. Lett. 95, 063002 (2005)",
    "title": "Matter Wave Diffraction from an Inclined Transmission Grating: Searching   for the Elusive He-4 Trimer Efimov State",
    "url": "https://arxiv.org/abs/quant-ph/0412064"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ea1049c4-364e-44b0-96b3-ec505b4bd101",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}