{
  "id": "hep-ex/0308016",
  "version": "v1",
  "published": "2003-08-07T18:18:26.000Z",
  "updated": "2003-08-07T18:18:26.000Z",
  "title": "Measurement of the B --> Xs l+ l- Branching Fraction Using a Sum over Exclusive Modes",
  "authors": [
    "The BABAR Collaboration",
    "B. Aubert"
  ],
  "comment": "18 pages, 3 postscript figures, contributed to Lepton-Photon 2003",
  "categories": [
    "hep-ex"
  ],
  "abstract": "We present a measurement of the branching fraction for the flavor-changing neutral current process B --> Xs l+ l- based on a sample of 88.9 \\times 10^6 Upsilon(4S) --> BBbar events recorded with the BaBar detector at the PEP-II e+e- storage ring. The final state is reconstructed from pairs of electrons or muons and a hadronic system consisting of one K+/- or K0s and up to two pions, with at most one pi0. Summing over both lepton flavors, we observe a signal of 41 +/- 10(stat) +/- 2(syst) events with a statistical significance of 4.6 sigmas. The inclusive branching fraction is determined to be BF(B --> Xs l+ l-) = [6.3 +/- 1.6(stat) +1.8 -1.5(syst)] 10^{-6} for m(l+ l-) > 0.2 GeV/c^2. All results are preliminary.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2003-08-07T18:18:26.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "branching fraction",
      "exclusive modes",
      "measurement",
      "flavor-changing neutral current process",
      "babar detector"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 18,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 625270,
      "adsabs": "2003hep.ex....8016T"
    }
  }
}