{
  "id": "1211.4462",
  "version": "v2",
  "published": "2012-11-19T15:25:16.000Z",
  "updated": "2013-05-29T08:40:30.000Z",
  "title": "Identification of b-quark jets with the CMS experiment",
  "authors": [
    "CMS Collaboration"
  ],
  "comment": "Replaced with published version. Added journal reference and DOI",
  "journal": "JINST 8 (2013) P04013",
  "doi": "10.1088/1748-0221/8/04/P04013",
  "categories": [
    "hep-ex"
  ],
  "abstract": "At the Large Hadron Collider, the identification of jets originating from b quarks is important for searches for new physics and for measurements of standard model processes. A variety of algorithms has been developed by CMS to select b-quark jets based on variables such as the impact parameters of charged-particle tracks, the properties of reconstructed decay vertices, and the presence or absence of a lepton, or combinations thereof. The performance of these algorithms has been measured using data from proton-proton collisions at the LHC and compared with expectations based on simulation. The data used in this study were recorded in 2011 at sqrt(s) = 7 TeV for a total integrated luminosity of 5.0 inverse femtobarns. The efficiency for tagging b-quark jets has been measured in events from multijet and t-quark pair production. CMS has achieved a b-jet tagging efficiency of 85% for a light-parton misidentification probability of 10% in multijet events. For analyses requiring higher purity, a misidentification probability of only 1.5% has been achieved, for a 70% b-jet tagging efficiency.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2013-05-29T08:40:30.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "cms experiment",
      "b-jet tagging efficiency",
      "select b-quark jets",
      "standard model processes",
      "t-quark pair production"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Journal of Instrumentation",
      "year": 2013,
      "month": "Apr",
      "volume": 8,
      "number": 4
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1203133,
      "adsabs": "2013JInst...8P4013T"
    }
  }
}