{
  "id": "hep-ex/0703036",
  "version": "v2",
  "published": "2007-03-23T19:10:42.000Z",
  "updated": "2007-04-01T09:30:26.000Z",
  "title": "Evidence for $D^0 - \\bar{D}^0$ Mixing",
  "authors": [
    "Belle Collaboration",
    "M. Staric"
  ],
  "comment": "6 pages, 2 figures, submitted to PRL",
  "journal": "Phys.Rev.Lett.98:211803,2007",
  "doi": "10.1103/PhysRevLett.98.211803",
  "categories": [
    "hep-ex"
  ],
  "abstract": "We observe evidence for $D^0 - \\bar{D}^0$ mixing by measuring the difference in apparent lifetime when a $D^0$ meson decays to the CP eigenstates $K^+K^-$ and $\\pi^+\\pi^-$, and when it decays to the final state $K^-\\pi^+$. We find $y_{CP}=(1.31\\pm 0.32({\\rm stat.})\\pm 0.25({\\rm syst.}))%$, 3.2 standard deviations from zero. We also search for a CP asymmetry between $D^0$ and $\\bar{D}^0$ decays; no evidence for CP violation is found. These results are based on 540 fb$^{-1}$ of data recorded by the Belle detector at the KEKB $e^+e^-$ collider.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2007-04-01T09:30:26.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.15.Ff",
      "11.30.Er",
      "13.25.Ft"
    ],
    "keywords": [
      "apparent lifetime",
      "cp asymmetry",
      "standard deviations",
      "meson decays",
      "belle detector"
    ],
    "tags": [
      "journal article",
      "famous paper"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 747053
    }
  }
}