{
  "annotation_id": "fffe9204-bf7b-4054-b8b8-e50996dfced7",
  "date_created": "2026-03-02T18:00:28.033000Z",
  "date_modified": "2026-03-02T18:00:28.033000Z",
  "file_hash": "8258cfc0312b380bb93f1e9b57885ed51786025e23970e32476f0882d24dd461",
  "private": false,
  "record": {
    "abstract": "We explore the Delta-I= 1/2 rule and epsilon\u0027/epsilon in K -\u003e pi pi\ntransitions using a Dyson-Schwinger equation model. Exploiting the feature that\nQCD penguin operators direct K^0_S transitions through 0^{++} intermediate\nstates, we find an explanation of the enhancement of I=0 K -\u003e pi pi transitions\nin the contribution of a light sigma-meson. This mechanism also affects\nepsilon\u0027/epsilon.",
    "arxiv_id": "nucl-th/9910029",
    "authors": [
      "J. C. R. Bloch",
      "M. A. Ivanov",
      "T. Mizutani",
      "C. D. Roberts",
      "S. M. Schmidt"
    ],
    "categories": [
      "nucl-th",
      "hep-ex",
      "hep-ph"
    ],
    "doi": "10.1103/PhysRevC.62.025206",
    "journal_ref": "Phys.Rev.C62:025206,2000",
    "title": "K -\u003e pi pi and a light scalar meson",
    "url": "https://arxiv.org/abs/nucl-th/9910029"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "64e8abfd-f296-45ca-baf2-42dd89e26626",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}