Volume 414 - 41st International Conference on High Energy physics (ICHEP2022) - Top quark and EW Physics
Comparison of $t\bar{t}W$ theory predictions in the $3\ell$ channel
M. Kraus
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Abstract
We report on our recent comparison of various theoretical approaches to predict
fiducial signatures for $pp\to t\bar{t}W$ in the $3\ell$ decay channel at
$\mathcal{O}(\alpha_s^3\alpha^6)$ and $\mathcal{O}(\alpha_s\alpha^8)$. The
comparison includes fixed-order predictions including full off-shell effects as
well as predictions based only on the double-resonant contributions by
employing the Narrow-Width-Approximation. Furthermore, we include parton-shower
matched predictions using the MG5_aMC@NLO and POWHEG-BOX frameworks.
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