{
  "annotation_id": "4f0b9a3b-409d-4ca6-90f8-062ce187c2e0",
  "date_created": "2026-03-02T18:00:01.185000Z",
  "date_modified": "2026-03-02T18:00:01.185000Z",
  "file_hash": "1319073ae7174d2a27d8fb2d6883a23c65f7439481eab60fb6639a46938270e8",
  "private": false,
  "record": {
    "abstract": "We consider the reaction g+d -\u003e pi+d in a wide energy range around and above\nthe eta-meson photoproduction threshold at backward CM angles of the outgoing\npion. Our theoretical analysis is essentially motivated by the recent\nmeasurements of the CLAS Collaboration at Jefferson Lab, where this kinematical\nregion of the reaction has been thoroughly studied for the first time and a\ncusps in the energy dependence of the differential cross section in the region\nof Eg = 600-800 MeV has been observed. Our preliminary and qualitative\nanalysis, based on single- and double-scattering diagrams, shows that the\nobserved structure can be explained by the contribution of the\ndouble-scattering diagram with intermediate production of the eta meson. The\neffect, to a considerable extent, is formed due to the contribution of N(1535)\nresonance to the amplitudes of subprocesses on the nucleons.",
    "arxiv_id": "nucl-th/0408027",
    "authors": [
      "A. E. Kudryavtsev",
      "V. E. Tarasov",
      "I. I. Strakovsky",
      "W. J. Briscoe",
      "Y. Ilieva"
    ],
    "categories": [
      "nucl-th",
      "hep-ph",
      "nucl-ex"
    ],
    "doi": "10.1103/PhysRevC.71.035202",
    "journal_ref": "Phys.Rev.C71:035202,2005",
    "title": "On the reaction g d -\u003e pi0 d near the threshold of eta production",
    "url": "https://arxiv.org/abs/nucl-th/0408027"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f16906cf-4d37-48b3-9d2e-bd01264e0df9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}