Electroweak and QCD corrections to top-pair hadroproduction in association with heavy bosons

Abstract

Abstract:We compute the contribution of order α 2 S α 2 to the cross section of a topantitop pair in association with at least one heavy Standard Model boson -Z, W ± , and Higgs -by including all effects of QCD, QED, and weak origin and by working in the automated MadGraph5 aMC@NLO framework. This next-to-leading order contribution is then combined with that of order α 3 S α, and with the two dominant lowest-order ones, α 2 S α and α S α 2 , to obtain phenomenological results relevant to a 8, 13, and 100 TeV pp collider.

NNLO QCD predictions for fully-differential top-quark pair production at the Tevatron

“…For recent progress in automated computation of EW corrections to hadron collider observables the reader is referred to refs. [108,109].…”

RECOLA2: REcursive Computation of One-Loop Amplitudes 2

“…While almost all of the above-listed programs were developed with a focus on QCD corrections 1 , Recola has been designed from the beginning with the main objective of facilitating an automated calculation of electroweak (EW) corrections. Recently, EW corrections have been included also in OpenLoops [29,30] and MadGraph5 aMC@NLO [31,32]. Recola further differs from other public codes in the implemented method as it makes consequent use of a recursive construction of one-loop off-shell currents following the technique described in Ref.…”

Associated production of a top pair and a Higgs boson beyond NLO

“…The weak corrections of O(α 2 s α 2 ) were evaluated in [9] (where also the QED corrections were considered) and [10]. An additional study of the strong and electroweak corrections to the associated production of a top-quark pair and a massive boson (Z, W or Higgs) was recently carried out in [11]. The NLO QCD and electroweak corrections have been included in the POWHEG BOX framework [12].…”