Production and decay of a heavy boson in association with top quarks

Malgorzata Worek

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arXiv · 2207.13151

Production and decay of a heavy boson in association with top quarks

Malgorzata Worek

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Abstract

We briefly report on NLO QCD corrections to the $pp \to t\bar{t} B +X$ process, where $B$ stands for $H,\,W^\pm$ or $Z$. In the calculation all double-, single and non-resonant Feynman diagrams, interferences and finite-width effects are included for the top quark and $W^\pm/Z$ gauge bosons. Numerical results are shown at the differential cross section level for various factorisation and renormalisation scale settings and a few PDF sets. The main theoretical uncertainties associated with neglected higher-order terms in the perturbative expansion and with different parametrisations of the PDFs are also discussed. Furthermore, we compare our complete predictions for $pp\to t\bar{t} B+X$ in multi-lepton final states to the calculation in the narrow-width approximation.

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Malgorzata Worek. 2022-07-26. Production and decay of a heavy boson in association with top quarks. https://arxiv.org/abs/2207.13151

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