{
  "annotation_id": "f4d96b7c-dc2a-46c0-b1c3-20f81b432d15",
  "date_created": "2026-03-02T18:00:08.484000Z",
  "date_modified": "2026-03-02T18:00:08.484000Z",
  "file_hash": "43341ab72157b53d009a9b6c1a897b245dcb5e1d14e24eb9edd5cc7e0bd9af02",
  "private": false,
  "record": {
    "abstract": "Using the experimental data on the energy level shift of kaonic hydrogen in\nthe ground state (the DEAR Collaboration, Phys. Rev. Lett. 94, 212302 (2005))\nand the theoretical value of the energy level shift, calculated within the\nphenomenological quantum field theoretic approach to the description of strong\nlow-energy anti-K N and anti-K NN interactions developed at Stefan Meyer\nInstitut fuer subatomare Physik in Vienna, we estimate the value of the\nsigma^(I = 1)_(KN)(0)-term of low-energy anti-K N scattering. We get sigma^(I =\n1)_(KN)(0) = (433 +/- 85) MeV. This testifies the absence of strange quarks in\nthe proton structure.",
    "arxiv_id": "nucl-th/0512071",
    "authors": [
      "A. N. Ivanov",
      "M. Faber",
      "V. A. Ivanova",
      "J. Marton",
      "N. I. Troitskaya"
    ],
    "categories": [
      "nucl-th",
      "hep-ph",
      "nucl-ex"
    ],
    "doi": "10.1103/PhysRevA.73.032510",
    "title": "On the estimate of the sigma^(I = 1)_(KN)(0)-term value from the energy   level shift of kaonic hydrogen in the ground state",
    "url": "https://arxiv.org/abs/nucl-th/0512071"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e566889c-8738-4c8d-9d52-586d8c118b20",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}