{
  "id": "1305.6117",
  "version": "v2",
  "published": "2013-05-27T06:18:12.000Z",
  "updated": "2013-11-14T07:09:08.000Z",
  "title": "Pion form factor and reactions e^+e^---> omega pi^0 and e^+e^---> pi^+ pi^- pi^+ pi^- at energies up to 2-3 GeV in the many-channel approach",
  "authors": [
    "N. N. Achasov",
    "A. A. Kozhevnikov"
  ],
  "comment": "15 pages, 9 figures. The work is redone using different subtraction scheme for the nondiagonal polarization operators",
  "journal": "Phys. Rev. D 88, 093002 (2013)",
  "doi": "10.1103/PhysRevD.88.093002",
  "categories": [
    "hep-ph",
    "hep-ex",
    "nucl-th"
  ],
  "abstract": "Using the field-theory-inspired expression for the pion electromagnetic form factor F_\\pi, a good description of the data in the range -10<s<1 GeV^2 is obtained upon taking into account the pseudoscalar-pseudoscalar (PP) loops. When the vector-pseudoscalar (VP) and the axial vector-pseudoscalar (AP) loops are taken into account in addition to the PP ones, a good description of the BABAR data on the reaction e^+e^--->pi^+ pi^- is obtained at energies up to 3 GeV. The inclusion of the VP and AP loops demands the treatment of the reactions e^+e^---> omega pi^0 and e^+e^---> pi^+ pi^- pi^+ pi^-. This task is also made, with the SND data on the omega pi^0 production and the BABAR data on the pi^+ pi^- pi^+ pi^- production, both in e^+e^- annihilation, upon taking into account \\rho(770) and the heavier \\rho(1450), \\rho(1700), and \\rho(2100) resonances. The problems with inclusion of the VP and AP loops are pointed out and discussed.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2013-11-14T07:09:08.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "13.40.Gp",
      "12.40.Vv",
      "13.66.Bc",
      "14.40.Be"
    ],
    "keywords": [
      "pion form factor",
      "many-channel approach",
      "pion electromagnetic form factor",
      "ap loops demands"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review D",
      "year": 2013,
      "month": "Nov",
      "volume": 88,
      "number": 9,
      "pages": "093002"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 15,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1235540,
      "adsabs": "2013PhRvD..88i3002A"
    }
  }
}