{
  "id": "hep-ex/0408125",
  "version": "v2",
  "published": "2004-08-24T18:54:15.000Z",
  "updated": "2004-11-08T20:17:16.000Z",
  "title": "Search for D^0-D^0bar mixing in D^0 -> K+pi- decays and measurement of the doubly-Cabibbo-suppressed decay rate",
  "authors": [
    "J. Li",
    "Z. P. Zhang",
    "A. J. Schwartz",
    "for the Belle Collaboration"
  ],
  "comment": "9 pages, 3 figures, 1 table, originally submitted to ICHEP2004 (Beijing, China); final version submitted to Physical Review Letters",
  "journal": "Phys.Rev.Lett.94:071801,2005",
  "doi": "10.1103/PhysRevLett.94.071801",
  "categories": [
    "hep-ex"
  ],
  "abstract": "We have searched for mixing in the D0-D0bar system by measuring the decay-time distribution of D0->K+pi- decays. The analysis uses 90 fb^{-1} of data collected by the Belle detector at the KEKB e+e- collider. We fit the decay-time distribution for the mixing parameters x' and y' and also for the parameter R_D, which is the ratio of the rate for the doubly-Cabibbo-suppressed decay D0->K+pi- to that for the Cabibbo-favored decay D0->K-pi+. We do these fits both assuming CP conservation and allowing for CP violation. We use a frequentist method to obtain a 95% C.L. region in the x'^2 - y' plane. Assuming no mixing, we measure R_D = (0.381 \\pm 0.017 +0.008 -0.016) %.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2004-11-08T20:17:16.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.15.Ff",
      "11.30.Er",
      "13.25.Ft"
    ],
    "keywords": [
      "doubly-cabibbo-suppressed decay rate",
      "decay-time distribution",
      "measurement",
      "belle detector",
      "d0-d0bar system"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 657208
    }
  }
}