{
  "annotation_id": "e7a80228-8884-4d44-8238-878fdc64b6de",
  "date_created": "2026-03-02T18:00:18.468000Z",
  "date_modified": "2026-03-02T18:00:18.468000Z",
  "file_hash": "64ea1417562c1f213ff58c7fcbd25222285c194bbf25b97e7527e5ddaaa6b967",
  "private": false,
  "record": {
    "abstract": "We discuss the low-energy behavior of the virtual Compton scattering\namplitude off a spin-zero target. We first compare various methods of obtaining\na low-energy expression based either on the soft-photon approximation or the\nuse of Ward-Takahashi identities. We point out that structure-dependent terms\nare defined with respect to a low-energy approximation of the pole terms which\ncommonly is separated from the full amplitude. We derive a general expression\nfor the structure-dependent terms in an expansion in terms of the momenta $k_1$\nand $k_2$ of the initial and final virtual photon, respectively, up to and\nincluding terms of order ${\\cal O}(k^4)$. At order ${\\cal O}(k^2)$ two terms\nappear which are related to the usual electric and magnetic polarizabilities of\nreal Compton scattering. At order ${\\cal O}(k^4)$ we find nine new structures\nof which five can only be determined using virtual photons.",
    "arxiv_id": "nucl-th/9607056",
    "authors": [
      "H. W. Fearing",
      "S. Scherer"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1007/s006010050067",
    "journal_ref": "Few Body Syst. 23 (1998) 111-126",
    "title": "Virtual Compton scattering off spin-zero particles at low energies",
    "url": "https://arxiv.org/abs/nucl-th/9607056"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "04f17f6c-489e-432d-963d-914615817553",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}