{
  "annotation_id": "88b882a5-96fd-4a73-981e-c3a3139b6805",
  "date_created": "2026-03-02T18:00:25.879000Z",
  "date_modified": "2026-03-02T18:00:25.879000Z",
  "file_hash": "238d67391b1862fa0747bf54ecd1a9b4fe93f42d656e731e79ee55ceafa53e5e",
  "private": false,
  "record": {
    "abstract": "We consider tree diagram contributions to neutral pion production in pp -\u003epp\npi0 using chiral perturbation theory in the relativistic and extremely\nnon-relativistic limits. In marked difference with the results from heavy\nfermion formalism, the impulse and s-wave rescattering terms in the\nrelativistic limit have equal signs and therefore add constructively, giving\nrise to a substantial contribution to the cross section. We argue that the\npower series expansion of the nucleon propagator is on the border of its\nconvergence circle. Consequently, a finite order heavy fermion formalism does\nnot predict nucleon pole terms correctly and therefore can not be applied to\nmeson production.",
    "arxiv_id": "nucl-th/9812009",
    "authors": [
      "E. Gedalin",
      "A. Moalem",
      "L. Razdolskaya"
    ],
    "categories": [
      "nucl-th"
    ],
    "title": "Is The Heavy Fermion Formalism Applicable to Meson Production Process?",
    "url": "https://arxiv.org/abs/nucl-th/9812009"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3d11bb0e-71be-4ae3-b334-203f95239a9c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}