{
  "annotation_id": "e9d5f9f3-39d4-4879-91ae-8e5c91cc41b8",
  "date_created": "2026-03-02T18:01:07.946000Z",
  "date_modified": "2026-03-02T18:01:07.946000Z",
  "file_hash": "c03096bdf18824c6756b95d112088e835ba04ef60548265b26f0620b1ea74e9e",
  "private": false,
  "record": {
    "abstract": "We analyze low-energy scattering of positrons on Ar atoms and N2 molecules\nusing Modified Effective-Range Theory (MERT) developped by O\u0027Malley, Spruch and\nRosenberg [Journal of Math. Phys. 2, 491 (1961)]. We use formulation of MERT\nbased on exact solutions of Schroedinger equation with polarization potential\nrather than low-energy expansions of phase shifts into momentum series. We show\nthat MERT describes well experimental data, provided that effective-range\nexpansion is performed both for s- and p-wave scattering, which dominate in the\nconsidered regime of positron energies (0.4 - 2 eV). We estimate the values of\nthe s-wave scattering lenght and the effective range for e+ - Ar and e+ - N2\ncollisions.",
    "arxiv_id": "physics/0604231",
    "authors": [
      "Zbigniew Idziaszek",
      "Grzegorz Karwasz"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "doi": "10.1103/PhysRevA.73.064701",
    "journal_ref": "Phys. Rev. A 73, 064701 (2006)",
    "title": "Applicability of Modified Effective-Range Theory to positron-atom and   positron-molecule scattering",
    "url": "https://arxiv.org/abs/physics/0604231"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1479a624-5580-45a6-9443-6358fa653875",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}