Hadroproduction of four top quarks in the POWHEG BOX

Manfred Kraus; Tom\'a\v{s} Je\v{z}o

Hadroproduction of four top quarks in the POWHEG BOX

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arxiv 2110.15159 v2 pith:FT47GXYW submitted 2021-10-28 hep-ph

Tomáš Ježo , Manfred Kraus This is my paper · ORCID

classification hep-ph

keywords quarkselectroweakfourframeworkinvestigatepowhegpredictionsproduction

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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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Invariant-mass threshold resummation for the production of four top quarks at the LHC
hep-ph 2025-05 accept novelty 6.0 of 10

First invariant-mass threshold resummation for ttbar ttbar production, giving NLO+NLL' predictions for the invariant-mass distribution and total cross section.

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