Decay modeling in 4top production
Abstract
We present NLO QCD predictions for the pp→ tt̅tt̅+X process in the 4 lepton decay channel at the integrated and differential level for the LHC centre-of-mass energy of √s=13.6~TeV. Specifically, we compare the fixed order NLO QCD calculations to the parton-shower matched results obtained with \textsc{MC@NLO} and \textsc{Powheg} matching. In the former, NLO QCD corrections are consistently included in the production and decay of the four top quarks, preserving all spin correlations. In the latter, higher order effects in top-quark decays with approximate spin correlations are simulated in the parton showers, using Pythia. Additionally the impact of including matrix element corrections in the top quark decays in the parton-shower matched predictions is analysed.
Related
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BibTeX
@misc{alsairafi2026decay,
title = {{Decay modeling in 4top production}},
author = {Manal Alsairafi},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.21813},
eprint = {2610.21813},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.21813},
note = {CC BY-SA 4.0},
}
RIS
TY - UNPB
TI - Decay modeling in 4top production
AU - Manal Alsairafi
PY - 2026
DA - 2026/10/15
PB - arXiv
DO - 10.48550/arxiv.2610.21813
UR - https://arxiv.org/abs/2610.21813
AB - We present NLO QCD predictions for the pp→ tt̅tt̅+X process in the 4 lepton decay channel at the integrated and differential level for the LHC centre-of-mass energy of √s=13.6~TeV. Specifically, we compare the fixed order NLO QCD calculations to the parton-shower matched results obtained with \textsc{MC@NLO} and \textsc{Powheg} matching. In the former, NLO QCD corrections are consistently included in the production and decay of the four top quarks, preserving all spin correlations. In the latter, higher order effects in top-quark decays with approximate spin correlations are simulated in the parton showers, using Pythia. Additionally the impact of including matrix element corrections in the top quark decays in the parton-shower matched predictions is analysed.
ER -