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arXiv · 2110.15159

Hadroproduction of four top quarks in the POWHEG BOX

Tomáš Ježo·Manfred Kraus
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Abstract

We present a new Monte Carlo event generator for the hadronic production of four top quarks in the POWHEG BOX framework. Besides the dominant next-to-leading order QCD corrections at $\mathcal{O}(\alpha_s^5)$ we also include all subleading electroweak productions channels at leading-order accuracy. We validate our theoretical predictions by comparing to parton-shower matched predictions obtained within the MC@NLO framework for stable top quarks. Furthermore, we investigate in detail the various sources of theoretical uncertainties. Finally, we investigate a single lepton plus jets signature to study for the first time the impact of the electroweak production modes as well as spin-correlation effects at the fiducial level.

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Tomáš Ježo, Manfred Kraus. 2021-10-28. Hadroproduction of four top quarks in the POWHEG BOX. https://doi.org/10.1103/physrevd.105.114024

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