Hadroproduction of four top quarks in the POWHEG BOX
Tom\'a\v{s} Je\v{z}o, Manfred Kraus
TL;DR
This paper introduces a new Monte Carlo generator for four-top hadroproduction, incorporating NLO QCD and electroweak corrections, validated against existing models, and analyzing uncertainties and signatures relevant for collider experiments.
Contribution
It presents a novel Monte Carlo event generator for four-top production including electroweak channels and detailed uncertainty analysis.
Findings
Validated predictions against MC@NLO for stable tops
Quantified impact of electroweak production modes
Analyzed spin-correlation effects in lepton+jets signature
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 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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