1 Ocak 2014 Dergi makalesi Açık Erişim

CERN İşbirliği

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{
  "@context": "https://schema.org/", 
  "@id": 108505, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "CERN", 
      "name": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "datePublished": "2014-01-01", 
  "description": "<p>This Letter presents a search at the LHC for s -channel single top-quark production in proton\u2013proton collisions at a centre-of-mass energy of 8 TeV. The analyzed data set was recorded by the ATLAS detector and corresponds to an integrated luminosity of 20.3 fb \u22121 . Selected events contain one charged lepton, large missing transverse momentum and exactly two b -tagged jets. A multivariate event classifier based on boosted decision trees is developed to discriminate s -channel single top-quark events from the main background contributions. The signal extraction is based on a binned maximum-likelihood fit of the output classifier distribution. The analysis leads to an upper limit on the s -channel single top-quark production cross-section of 14.6 pb at the 95% confidence level. The fit gives a cross-section of \u03c3s=5.0\u00b14.3\u00a0pb , consistent with the Standard Model expectation.</p>", 
  "headline": "Search for s -channel single top-quark production in proton\u2013proton collisions at s=8\u00a0TeV with the ATLAS detector", 
  "identifier": 108505, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Search for s -channel single top-quark production in proton\u2013proton collisions at s=8\u00a0TeV with the ATLAS detector", 
  "url": "https://aperta.ulakbim.gov.tr/record/108505"
}