Four top final states with NLO accuracy in perturbative QCD: 3 lepton channel
arXiv:2410.05960 · doi:10.1007/JHEP03(2025)025
Abstract
We examine the effect of higher-order QCD corrections on the four top-quark production cross section in the lepton decay channel. Top-quark and gauge-boson decays are included at next-to-leading order in perturbative QCD. The narrow-width approximation, that preserves spin correlations, is used to perform the calculation for this complex process. We present differential cross-section distributions of top-quark decay products for the LHC Run III energy of TeV, using realistic selection cuts. Our results show that QCD corrections and jet radiation in top-quark and decays can lead to significant changes in shapes of basic kinematic distributions and, therefore, need to be included for the accurate description of process in the decay channel. The NLO QCD results obtained in this work are important in the context of the recent observation of the process by the ATLAS and CMS collaborations and are of great significance for the High-Luminosity phase of the LHC.
arXiv comment27 pages, 11 figures, 2 tables, version to appear in JHEP
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