1 Ocak 2014 Dergi makalesi Açık Erişim

CERN İşbirliği

Citation Style Language JSON

{
  "DOI": "10.1016/j.physletb.2014.10.063", 
  "abstract": "<p>A search for pair production of third-generation scalar leptoquarks and supersymmetric top quark partners, top squarks, in final states involving tau leptons and bottom quarks is presented. The search uses events from a data sample of proton\u2013proton collisions corresponding to an integrated luminosity of 19.7 fb \u22121 , collected with the CMS detector at the LHC with s=8 TeV . The number of observed events is found to be in agreement with the expected standard model background. Third-generation scalar leptoquarks with masses below 740 GeV are excluded at 95% confidence level, assuming a 100% branching fraction for the leptoquark decay to a tau lepton and a bottom quark. In addition, this mass limit applies directly to top squarks decaying via an R-parity violating coupling \u03bb333\u2032 . The search also considers a similar signature from top squarks undergoing a chargino-mediated decay involving the R-parity violating coupling \u03bb3jk\u2032 . Each top squark decays to a tau lepton, a bottom quark, and two light quarks. Top squarks in this model with masses below 580 GeV are excluded at 95% confidence level. The constraint on the leptoquark mass is the most stringent to date, and this is the first search for top squarks decaying via \u03bb3jk\u2032 .</p>", 
  "author": [
    {
      "family": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "container_title": "Physics Letters B", 
  "id": "108537", 
  "issued": {
    "date-parts": [
      [
        2014, 
        1, 
        1
      ]
    ]
  }, 
  "title": "Search for pair production of third-generation scalar leptoquarks and top squarks in proton\u2013proton collisions at s=8 TeV", 
  "type": "article-journal"
}