{
  "annotation_id": "50bb92b5-097a-4e81-8b16-58ae7f432487",
  "date_created": "2026-03-02T18:00:11.264000Z",
  "date_modified": "2026-03-02T18:00:11.264000Z",
  "file_hash": "5d1fa9af8a4dce1dbba9f0b7a41640f3792f1080d5194d665602c17eb0382f4b",
  "private": false,
  "record": {
    "abstract": "Pion elastic, charge exchange scattering and induced eta production on the\ntrinucleon systems are investigated in a coupled-channels approach in momentum\nspace with Fadeev wave functions. The channel $\\pi N \\rightarrow \\eta N$ is\nincluded using an isobar model with S-, P-, and D-wave resonances. While the\ncoherent reactions like $^3$He($\\pi,\\pi)^3$He can be reasonably well reproduced\nup to $T_{\\pi}$=500 MeV, large discrepancies appear for the incoherent\nprocesses, $^3$He($\\pi^-,\\pi^0)^3$H and $^3$He($\\pi^-,\\eta)^3$H at backward\nangles and energies above $\\Delta$-resonance. In the forward direction the\n$(\\pi,\\eta)$ calculations underestimate the experimental measurements very\nclose to threshold but agreement with the data improves with increasing pion\nenergy. Predictions are made for the asymmetries of the various reactions on\npolarized $^3$He.",
    "arxiv_id": "nucl-th/9301004",
    "authors": [
      "S. S. Kamalov",
      "L. Tiator",
      "C. Bennhold"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.47.941",
    "journal_ref": "Phys.Rev.C47:941-956,1993",
    "title": "Pion interaction with the trinucleon up to the eta production threshold",
    "url": "https://arxiv.org/abs/nucl-th/9301004"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0594c52a-7072-4d61-a585-f10c385d6eab",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}