{
  "id": "0808.2459",
  "version": "v2",
  "published": "2008-08-18T19:42:28.000Z",
  "updated": "2008-11-02T21:35:39.000Z",
  "title": "New measurement of the K+ => pi+,nu,nubar branching ratio",
  "authors": [
    "E949 Collaboration"
  ],
  "comment": "To be published in Physical Review Letters",
  "journal": "Phys.Rev.Lett.101:191802,2008",
  "doi": "10.1103/PhysRevLett.101.191802",
  "categories": [
    "hep-ex"
  ],
  "abstract": "Three events for the decay K+ => pi+,nu,nubar have been observed in the pion momentum region below the K+ => pi+,pi0 peak, 140 < P_pi < 199 MeV/c, with an estimated background of 0.93+-0.17(stat.)+0.32-0.24(syst.) events. Combining this observation with previously reported results yields a branching ratio of B(K+ => pi+,nu,nubar) = (1.73+1.15-1.05)e-10 consistent with the standard model prediction.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2008-11-02T21:35:39.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.15.Hh",
      "13.20.Eb"
    ],
    "keywords": [
      "branching ratio",
      "measurement",
      "standard model prediction",
      "pion momentum region"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2008,
      "month": "Nov",
      "volume": 101,
      "number": 19,
      "pages": 191802
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 793322,
      "adsabs": "2008PhRvL.101s1802A"
    }
  }
}