{
  "id": "1109.2461",
  "version": "v2",
  "published": "2011-09-12T13:30:54.000Z",
  "updated": "2012-02-24T12:05:13.000Z",
  "title": "On the possibility to measure the (pi0 to gamma gamma) decay width and the (gamma* gamma to pi0) transition form factor with the KLOE-2 experiment",
  "authors": [
    "D. Babusci",
    "H. Czyz",
    "F. Gonnella",
    "S. Ivashyn",
    "M. Mascolo",
    "R. Messi",
    "D. Moricciani",
    "A. Nyffeler",
    "G. Venanzoni",
    "KLOE-2 Collaboration"
  ],
  "comment": "2-column style; matches the revision accepted by EPJC",
  "journal": "EPJ C72, 1917 (2012)",
  "doi": "10.1140/epjc/s10052-012-1917-1",
  "categories": [
    "hep-ph",
    "hep-ex"
  ],
  "abstract": "A possibility of KLOE-2 experiment to measure the width Gamma(pi0 to gamma gamma) and the (pi0 gamma gamma*) form factor F(Q^2) at low invariant masses of the virtual photon in the space-like region is considered. This measurement is an important test of the strong interaction dynamics at low energies. The feasibility is estimated on the basis of a Monte-Carlo simulation. The expected accuracy for Gamma(pi0 to gamma gamma) is at a per cent level, which is better than the current experimental world average and theory. The form factor will be measured for the first time at Q^2 less or equal 0.1 GeV^2 in the space-like region. The impact of these measurements on the accuracy of the pion-exchange contribution to the hadronic light-by-light scattering part of the anomalous magnetic moment of the muon is also discussed.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2012-02-24T12:05:13.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "gamma gamma",
      "transition form factor",
      "decay width",
      "possibility",
      "current experimental world average"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "European Physical Journal C",
      "year": 2012,
      "month": "Mar",
      "volume": 72,
      "pages": 1917
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 927054,
      "adsabs": "2012EPJC...72.1917B"
    }
  }
}