{
  "id": "hep-ex/9504005",
  "version": "v3",
  "published": "1995-04-13T21:00:48.000Z",
  "updated": "1995-04-21T20:55:03.000Z",
  "title": "A Measurement of the Branching Ratio and Form Factor of K_L->mu mu gamma",
  "authors": [
    "M. B. Spencer et. al"
  ],
  "comment": "10 pages of text, 4 figures in separate files",
  "journal": "Phys.Rev.Lett.74:3323-3326,1995",
  "doi": "10.1103/PhysRevLett.74.3323",
  "categories": [
    "hep-ex"
  ],
  "abstract": "We report on a measurement of the decay $K_L\\rightarrow\\mu^+\\mu^-\\gamma$ from Fermilab experiment E799. We observe $207$ candidate signal events with an estimated background of $10.5 \\pm 4.0$ events and establish $B(K_L\\rightarrow\\mu^+\\mu^-\\gamma) = (3.23\\pm 0.23(stat) \\pm 0.19(sys))\\times 10^{-7}$. This provides the first measurement of the $K\\gamma\\gamma^*$ form factor in the muonic Dalitz decay mode of the $K_L$.",
  "revisions": [
    {
      "version": "v3",
      "updated": "1995-04-21T20:55:03.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "form factor",
      "mu gamma",
      "branching ratio",
      "muonic dalitz decay mode",
      "fermilab experiment e799"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 393864
    }
  }
}