2024/10/16 by Nikolaos Dimitrakopoulos, Dimitrakopoulos, Nikolaos
Computer Science · Physics and Astronomy · #Distributed and Parallel Computing Systems #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2410.12629
openalex publication_date 2024/10/16 · openalex created_date 2024/12/07 · openalex updated_date 2026/07/28
We briefly summarise the results for the four top-quark production process in the 4ℓ decay channel at NLO accuracy in perturbative QCD. We employ the narrow-width approximation for the treatment of the unstable particles, preserving spin correlations to NLO accuracy throughout our computations. The NLO QCD corrections are applied to both the production and decays of the four tops. We investigate the overall size of the NLO QCD corrections and the impact of neglecting higher-order effects in top-quark decays.