{
  "id": "0802.4052",
  "version": "v2",
  "published": "2008-02-27T17:16:11.000Z",
  "updated": "2008-06-27T22:32:47.000Z",
  "title": "Improved measurement of CP observables in B- --> D0_{CP} K- decays",
  "authors": [
    "The BABAR Collaboration",
    "B. Aubert"
  ],
  "comment": "8 pages, 3 postscript figures",
  "journal": "Phys.Rev.D77:111102,2008",
  "doi": "10.1103/PhysRevD.77.111102",
  "categories": [
    "hep-ex"
  ],
  "abstract": "We present a study of the decay B- -> D0_CP K- and its charge conjugate, where D0_CP is reconstructed in both a non-CP flavor eigenstate and in CP (CP-even and CP-odd) eigenstates, based on a sample of 382 million Y(4S) -> BBbar decays collected with the BABAR detector at the PEP-II e+e- storage ring. We measure the direct CP asymmetries A_CP\\pm and the ratios of the branching fractions R_CP\\pm: A_CP+ = 0.27\\pm 0.09(stat)\\pm 0.04(syst), A_CP- =-0.09\\pm 0.09(stat)\\pm 0.02(syst), R_CP+ = 1.06\\pm 0.10(stat)\\pm 0.05(syst), R_CP- = 1.03\\pm 0.10(stat)\\pm 0.05(syst). We also express the results in terms of the so called Cartesian coordinates x+, x-, and r^2: x+ = -0.09\\pm 0.05(stat)\\pm 0.02(syst)}, x- = 0.10\\pm 0.05(stat)\\pm 0.03(syst)}, r^2 = 0.05\\pm 0.07(stat)\\pm 0.03(syst)}. These results will help to better constrain the phase parameter $\\gamma=\\arg(-V_{ud}V_{ub}^*/V_{cd}V_{cb}^*)$ of the Cabibbo-Kobayashi-Maskawa quark mixing matrix.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2008-06-27T22:32:47.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "11.30.Er",
      "14.40.Nd",
      "13.25.Hw"
    ],
    "keywords": [
      "cp observables",
      "measurement",
      "non-cp flavor eigenstate",
      "direct cp asymmetries",
      "cabibbo-kobayashi-maskawa quark mixing matrix"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review D",
      "year": 2008,
      "month": "Jun",
      "volume": 77,
      "number": 11,
      "pages": 111102
    },
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 780148,
      "adsabs": "2008PhRvD..77k1102A"
    }
  }
}