1 Ocak 2014 Dergi makalesi Açık Erişim

CERN İşbirliği

Citation Style Language JSON

{
  "DOI": "10.1016/j.physletb.2014.11.042", 
  "abstract": "<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>", 
  "author": [
    {
      "family": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "container_title": "Physics Letters B", 
  "id": "108505", 
  "issued": {
    "date-parts": [
      [
        2014, 
        1, 
        1
      ]
    ]
  }, 
  "title": "Search for s -channel single top-quark production in proton\u2013proton collisions at s=8\u00a0TeV with the ATLAS detector", 
  "type": "article-journal"
}