{
  "id": "hep-ph/0502130",
  "version": "v1",
  "published": "2005-02-14T16:43:18.000Z",
  "updated": "2005-02-14T16:43:18.000Z",
  "title": "Pion-pion scattering and the K->3pi decay amplitudes",
  "authors": [
    "Nicola Cabibbo",
    "Gino Isidori"
  ],
  "comment": "32 pages, 6 figures",
  "journal": "JHEP0503:021,2005",
  "doi": "10.1088/1126-6708/2005/03/021",
  "categories": [
    "hep-ph"
  ],
  "abstract": "We revisit the recently proposed method for the determination of the pi-pi scattering length combination a_{0}-a_{2}, based on the study of the pi0 pi0 spectrum in K+ -> pi+ pi0 pi0. In view of a precision measurement, we discuss here the effects due to smaller absorptive contributions to the K+ -> pi+ pi0 pi0 and K+ -> pi+ pi+ pi- amplitudes. We outline a method of analysis that can lead to a precision determination of a_{0}-a_{2} and is based on very general properties of the S matrix. The discussion of final-state rescattering and cusp effects is also extended to the two K_L -> 3pi coupled channels. Thanks to the present work, the theoretical error on the a_{0}-a_{2} combination extracted from the K+ -> pi+ pi0 pi0 spectrum is reduced to about 5%. A further reduction requires the evaluation of the effects arising from radiative corrections.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2005-02-14T16:43:18.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "decay amplitudes",
      "pion-pion scattering",
      "pi0 pi0 spectrum",
      "pi-pi scattering length combination",
      "3pi coupled channels"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "IOP",
      "journal": "Journal of High Energy Physics",
      "year": 2005,
      "month": "Mar",
      "volume": 2005,
      "number": 3,
      "pages": "021"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 32,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 676708,
      "adsabs": "2005JHEP...03..021C"
    }
  }
}