1 Ocak 2016 Dergi makalesi Açık Erişim

CERN İşbirliği

Citation Style Language JSON

{
  "DOI": "10.1016/j.physletb.2016.02.055", 
  "abstract": "<p>In the pp\u2192tt\u00af process the angular distributions of top and anti-top quarks are expected to present a subtle difference, which could be enhanced by processes not included in the Standard Model. This Letter presents a measurement of the charge asymmetry in events where the top-quark pair is produced with a large invariant mass. The analysis is performed on 20.3 fb \u22121 of pp collision data at s=8TeV collected by the ATLAS experiment at the LHC, using reconstruction techniques specifically designed for the decay topology of highly boosted top quarks. The charge asymmetry in a fiducial region with large invariant mass of the top-quark pair ( mtt\u00af&gt;0.75\u00a0TeV ) and an absolute rapidity difference of the top and anti-top quark candidates within \u22122&lt;|yt|\u2212|yt\u00af|&lt;2 is measured to be 4.2\u00b13.2% , in agreement with the Standard Model prediction at next-to-leading order. A differential measurement in three tt\u00af mass bins is also presented.</p>", 
  "author": [
    {
      "family": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "container_title": "Physics Letters B", 
  "id": "107915", 
  "issued": {
    "date-parts": [
      [
        2016, 
        1, 
        1
      ]
    ]
  }, 
  "title": "Measurement of the charge asymmetry in highly boosted top-quark pair production in s=8\u00c2 TeV pp collision data collected by the ATLAS experiment", 
  "type": "article-journal"
}