{
  "annotation_id": "58d58965-af8f-4d4b-ad1c-417307c752bf",
  "date_created": "2026-03-02T18:00:14.878000Z",
  "date_modified": "2026-03-02T18:00:14.878000Z",
  "file_hash": "e6549c6383390a3498cf4f650224ec8257b90a6921e56194b52d407b8056a631",
  "private": false,
  "record": {
    "abstract": "The pion-nucleon and kaon-nucleon scattering lengths are studied in the QCD\nsum rule. We show that the leading and next-to-leading order terms of the OPE\ngive rise to the Tomozawa-Weinberg and sigma terms, respectively. We also show\nthat in the kaon-nucleon system the $\\Lambda(1405)$ contribution has to be\nsubtracted from the OPE side in order to obtain the scattering length. The odd\ncomponents of the $T$-matrices are in agreement with the experimental values\nnot only in the pion-nucleon channel but also in the kaon-nucleon channel after\nthe $\\Lambda(1405)$ contribution subtracted. The even components disagree with\nthe experimental values in the pion-nucleon channel, which is similar to the\nsituation in the PCAC-plus-current-algebra approach at the Weinberg point. We\nspeculate that this discrepancy should be explained by the continuum\ncontribution in the spectral function above the pion-nucleon threshold.",
    "arxiv_id": "nucl-th/9409012",
    "authors": [
      "Y. Kondo",
      "O. Morimatsu",
      "Y. Nishino"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1103/PhysRevC.53.1927",
    "journal_ref": "Phys.Rev.C53:1927-1935,1996",
    "title": "Pion-Nucleon and Kaon-Nucleon Scattering Lengths in QCD Sum Rules",
    "url": "https://arxiv.org/abs/nucl-th/9409012"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3c94b203-35e1-4b11-af85-d744b7a29e92",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}