{
  "annotation_id": "ecd97ebc-2f53-4668-92de-7284b4677903",
  "date_created": "2026-03-02T18:00:35.933000Z",
  "date_modified": "2026-03-02T18:00:35.933000Z",
  "file_hash": "06e4297ad12d61492c1e159f00f137b649cf35ff5821f21d33da1146494b118b",
  "private": false,
  "record": {
    "abstract": "We present a variational basis-set calculational scheme for elastic\nscattering of positronium atom by helium atom in S wave and apply it to the\ncalculation of the scattering length. Highly correlated trial functions with\nappropriate symmetry are used in this calculation. We report numerical result\nfor the scattering length in atomic unit: $(1.0\\pm 0.1)a_0$. This corresponds\nto a zero-energy elastic cross section of $(4.0\\pm 0.8)\\pi a_0^2$.",
    "arxiv_id": "physics/0103095",
    "authors": [
      "Sadhan K. Adhikari"
    ],
    "categories": [
      "physics.chem-ph",
      "physics.atm-clus",
      "physics.atom-ph"
    ],
    "doi": "10.1103/PhysRevA.64.022702",
    "journal_ref": "Phys. Rev. A 64 (2001) 022702 (1-6)",
    "title": "Variational calculation of positronium-helium-atom scattering length",
    "url": "https://arxiv.org/abs/physics/0103095"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "53166af7-0a04-4d08-8f75-9a17ea45c02b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}