{
  "annotation_id": "d88251e5-5f16-41a2-9477-f125acaceb67",
  "date_created": "2026-03-02T18:00:25.833000Z",
  "date_modified": "2026-03-02T18:00:25.833000Z",
  "file_hash": "f3f3ffd4480918aaa528fd76b7ab5011394b3c5c67f7903d8a67d3fd4d1e5b6b",
  "private": false,
  "record": {
    "abstract": "I discuss isospin violation in an effective field theory appraoch of the\nnucleon-nucleon interaction. The observed leading order charge independence\nbreaking is explained in terms of one-pion exchange together with a\nfour-nucleon contact term. A general classification scheme of corrections to\nthis leading order results is presented and an explanation is offered why\ncharge-dependent pion-nucleon coupling constants can not play a role in the\nobserved isospin violation in the NN scattering lengths. Charge symmetry\nbreaking, the size of $\\pi\\gamma$-exchange graphs and the pionless theory are\nalso discussed.",
    "arxiv_id": "nucl-th/9903046",
    "authors": [
      "E. Epelbaum",
      "Ulf-G. Mei\u00dfner"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "title": "Isospin violation in the two-nucleon system",
    "url": "https://arxiv.org/abs/nucl-th/9903046"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "97b60cb4-0779-4266-a20d-fa44036913e7",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}