{
  "annotation_id": "f13612a2-791b-4382-abcb-89fdadcfe43b",
  "date_created": "2026-03-02T18:00:25.254000Z",
  "date_modified": "2026-03-02T18:00:25.254000Z",
  "file_hash": "911ff2d69fb237e864d5785a943249ac96d7c9479142c24d0a0d6c5834e733df",
  "private": false,
  "record": {
    "abstract": "Physics beyond the standard model of electroweak interactions that violates\nlepton number will, in general, induce operators involving the quark and lepton\nfields that violate lepton number. I point out that some matrix elements of\nparticular operators are known. In the limit of exact SU(3) flavor symmetry the\noperator overline{u} gamma_mu (1-gamma_5)d overline{u} gamma_mu (1-gamma_5)d is\npart of the ${\\bf 27}$ representation responsible for Delta I=3/2 strangeness\nchanging decays in the standard model. At leading order in the chiral expansion\nthere is only one coupling constant that describes the weak interactions of the\npseudo-Goldstone bosons induced by the 27 representation. The observed\nbranching fraction for K+ to pi+ pi0 determines this coupling constant.\nContributions of the form m_s log m_s are used to estimate SU(3) breaking\ncorrections to the relation between K+ to pi+ pi0 and the pi- to pi+ e- e-\ninteraction.",
    "arxiv_id": "nucl-th/9811087",
    "authors": [
      "Martin J. Savage"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1103/PhysRevC.59.2293",
    "journal_ref": "Phys.Rev. C59 (1999) 2293-2296",
    "title": "Pionic Matrix Elements in Neutrinoless Double-Beta Decay",
    "url": "https://arxiv.org/abs/nucl-th/9811087"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5b887939-2c51-4db2-b00b-832f95a8ddef",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}