5 papers found.

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Abstract We perform a study of lepton-pair production in association with bottom quarks at the LHC based on the predictions obtained at next-to-leading order in QCD, both at fixed order and matched with a QCD parton shower. We consider a comprehensive set of observables and estimate the associated theoretical uncertainties by studying the dependence on the perturbative QCD scales...

Abstract We calculate the complete-NLO predictions for \( t\overline{t}{W}^{\pm } \) and \( t\overline{t}t\overline{t} \) production in proton-proton collisions at 13 and 100 TeV. All the non-vanishing contributions of \( \mathcal{O}\left({\alpha}_s^i{\alpha}^j\right) \) with i + j = 3, 4 for \( t\overline{t}{W}^{\pm } \) and i + j = 4, 5 for \( t\overline{t}t\overline{t} \) are...

Abstract In this work we present for the first time predictions for top-quark pair differential distributions at the LHC at NNLO QCD accuracy and including EW corrections. For the latter we include not only contributions of \( \mathcal{O}\left({\alpha}_s^2\alpha \right) \), but also those of order \( \mathcal{O}\left({\alpha}_s{\alpha}^2\right) \) and \( \mathcal{O}\left({\alpha...

We study Higgs boson production in association with a top quark and a W boson at the LHC. At NLO in QCD, tWH interferes with \(t\bar{t} H\) and a procedure to meaningfully separate the two processes needs to be employed. In order to define tWH production for both total rates and differential distributions, we consider the diagram removal and diagram subtraction techniques that...

Vector-boson scattering processes are of great importance for the current run-II and future runs of the Large Hadron Collider. The presence of triple and quartic gauge couplings in the process gives access to the gauge sector of the Standard Model (SM) and possible new-physics contributions there. To test any new-physics hypothesis, sound knowledge of the SM contributions is...