{
  "annotation_id": "5f4eb3d3-29eb-4aec-8b4a-62537cfcac55",
  "date_created": "2026-03-02T18:00:35.512000Z",
  "date_modified": "2026-03-02T18:00:35.512000Z",
  "file_hash": "6dc66a2f280c8e4937e2c22174bdb494714412d728904f5d5f3a27c00ab6a923",
  "private": false,
  "record": {
    "abstract": "Scattering of positronium (Ps) by sodium and potassium atoms has been\ninvestigated employing a three-Ps-state coupled-channel model with Ps(1s,2s,2p)\nstates using a time-reversal-symmetric regularized electron-exchange model\npotential fitted to reproduce accurate theoretical results for PsNa and PsK\nbinding energies. We find a narrow S-wave singlet resonance at 4.58 eV of width\n0.002 eV in the Ps-Na system and at 4.77 eV of width 0.003 eV in the Ps-K\nsystem. Singlet P-wave resonances in both systems are found at 5.07 eV of width\n0.3 eV. Singlet D-wave structures are found at 5.3 eV in both systems. We also\nreport results for elastic and Ps-excitation cross sections for Ps scattering\nby Na and K.",
    "arxiv_id": "physics/0103035",
    "authors": [
      "Sadhan K. Adhikari",
      "Puspajit Mandal"
    ],
    "categories": [
      "physics.atom-ph",
      "physics.atm-clus",
      "physics.chem-ph"
    ],
    "doi": "10.1088/0953-4075/34/8/302",
    "journal_ref": "J. Phys. B 34 (2001) 1361-1367",
    "title": "S-, P- and D-wave resonances in positronium-sodium and   positronium-potassium scattering",
    "url": "https://arxiv.org/abs/physics/0103035"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4e713915-9b7f-4140-833e-b73181e80b92",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}