{
  "id": "hep-ex/0205082",
  "version": "v1",
  "published": "2002-05-23T21:19:44.000Z",
  "updated": "2002-05-23T21:19:44.000Z",
  "title": "Measurements of Branching Fractions and CP-Violating Asymmetries in B0 --> pi+pi-, K+pi-, K+K- Decays",
  "authors": [
    "B. Aubert",
    "BABAR Collaboration"
  ],
  "comment": "Presented at the 37th Rencontres de Moriond on Electroweak Interactions, 15 pages, 3 figures (7 postscript files)",
  "journal": "Phys.Rev.Lett. 89 (2002) 281802",
  "categories": [
    "hep-ex"
  ],
  "abstract": "We present updated measurements of branching fractions and CP-violating asymmetries for neutral B meson decays to two-body final states of charged pions and kaons. The results are obtained from a data sample of about 60 million Y(4S) --> B-anti-B decays collected between 1999 and 2001 by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. The sample contains 124^{+16}_{-15} pi-pi, 403+/-24 K-pi, and 0.6^{+8.0}_{-7.4} K-K candidates, from which we measure the following quantities: BF(B0 --> pi+pi-) = (5.4+/-0.7+/-0.4) x 10^{-6}, BF(B0 --> K+pi-) = (17.8+/-1.1+/-0.8) x 10^{-6}, BF(B0 --> K+K-) < 1.1 x 10^{-6} (90% C.L.} A_Kpi = -0.05+/-0.06+/-0.01 [-0.14,+0.05], S_pipi = -0.01+/-0.37+/-0.07 [-0.66,+0.62], C_pipi = -0.02+/-0.29+/-0.07 [-0.54,+0.48], where the errors are statistical and systematic, respectively, and the asymmetry limits correspond to the 90% confidence level. These results are preliminary.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2002-05-23T21:19:44.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "cp-violating asymmetries",
      "branching fractions",
      "measurements",
      "asymmetry limits correspond",
      "two-body final states"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 15,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 587253,
      "adsabs": "2002hep.ex....5082A"
    }
  }
}