{
  "id": "hep-ex/0205045",
  "version": "v1",
  "published": "2002-05-15T16:12:13.000Z",
  "updated": "2002-05-15T16:12:13.000Z",
  "title": "Measurements of Lifetimes, Mixing and CP Violation of B Mesons with the BaBar Detector",
  "authors": [
    "Gerhard Raven"
  ],
  "comment": "10 pages, 4 figures; proceedings of the XXXVII Rencontres de Moriond on Electroweak Interactions and Unified Theories, Les Arcs, France, 9-16 March 2002",
  "categories": [
    "hep-ex"
  ],
  "abstract": "Using a data sample of 62 million \\FourS\\to B\\Bbar decays collected between 1999 and 2001 by the BaBar detector at the PEP2 asymmetric-energy B Factory at SLAC we study events in which one neutral B meson is fully reconstructed in a final state containing a charmonium meson and the flavour of the other neutral B meson is determined from its decay products. The amplitude of the CP-violating asymmetry, which in the Standard Model is proportional to sin(2 beta), is derived from the decay time distributions. We measure sin(2 beta) = 0.75 \\pm 0.09 (stat) \\pm 0.04 (syst) and |\\lambda| = 0.92 \\pm 0.06 (stat) \\pm 0.02 (syst). The latter is consistent with the Standard Model expectation of no direct CP violation. These results are preliminary. In addition, we report on precision measurements of the B lifetimes, and the \\Bz-\\Bzb oscillation frequency \\deltamd.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2002-05-15T16:12:13.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "babar detector",
      "measurements",
      "decay time distributions",
      "standard model expectation",
      "direct cp violation"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 586833,
      "adsabs": "2002hep.ex....5045R"
    }
  }
}