September 30, 2015 Technical note Open Access

Bevilacqua, G.; Hartanto, H. B.; Kraus, M.; Worek, M.

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{
  "DOI": "10.15161/oar.it/76810", 
  "abstract": "<p>We present a complete description of top quark pair production in association with a jet in the dilepton channel. Our calculation is accurate to next-to-leading order in QCD (NLO) and includes all non-resonant diagrams, interferences and off-shell effects of the top quark. Moreover, non-resonant and off-shell effects due to the finite W gauge boson width are taken into account. This calculation constitutes the first fully realistic NLO computation for top quark pair production with a finalstate jet in hadronic collisions. Numerical results for differential distributions as well as total cross sections are presented for the Large Hadron Collider (LHC) at 8 TeV. With our inclusive cuts, NLO predictions reduce the unphysical scale dependence by more than a factor of 3 and lower the total rate by about 13% compared to leading order QCD (LO) predictions. In addition, the size of the top quark off-shell effects is estimated to be below 2%.</p>", 
  "author": [
    {
      "family": "Bevilacqua, G."
    }, 
    {
      "family": "Hartanto, H. B."
    }, 
    {
      "family": "Kraus, M."
    }, 
    {
      "family": "Worek, M."
    }
  ], 
  "id": "76810", 
  "issued": {
    "date-parts": [
      [
        2015, 
        9, 
        30
      ]
    ]
  }, 
  "language": "eng", 
  "title": "Top Quark Pair Production in Association with a Jet with NLO QCD Off-Shell Effects at the Large Hadron Collider", 
  "type": "article"
}