{
  "id": "hep-ex/0607058",
  "version": "v1",
  "published": "2006-07-25T21:26:39.000Z",
  "updated": "2006-07-25T21:26:39.000Z",
  "title": "A Search for the $B^0 \\to e^+e^-γ$ and $B^0 \\to μ^+μ^-γ$ Decays",
  "authors": [
    "The BaBar Collaboration",
    "B. Aubert"
  ],
  "comment": "14 pages, 9 figures, submitted to ICHEP2006",
  "categories": [
    "hep-ex"
  ],
  "abstract": "With the BaBar detector at the PEP-II asymmetric $B$ Factory at SLAC, we present the first search for the decays $B^0\\to\\ell^+\\ell^-\\gamma$ ($l=e, \\mu$). Using a data set of 292 $fb^{-1}$ collected at the $\\Upsilon(4S)$ resonance, we find no significant signal and set the following branching fraction upper limits at 90% confidence level: $\\mathcal{B}(B^0\\to e^+e^-\\gamma)<0.7\\times 10^{-7}$ and $\\mathcal{B}(B^0\\to \\mu^+\\mu^-\\gamma)<3.4\\times 10^{-7}$.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2006-07-25T21:26:39.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "branching fraction upper limits",
      "data set",
      "confidence level",
      "babar detector",
      "pep-ii asymmetric"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 722422,
      "adsabs": "2006hep.ex....7058T"
    }
  }
}