https://doi.org/10.1140/epjc/s10052-024-12836-0
Regular Article - Theoretical Physics
Improving NLO QCD event generators with high-energy EW corrections
1
INFN, Sezione di Bologna, Via Irnerio 46, 40126, Bologna, Italy
2
Department of Physics, Lund University, Sölvegatan 14A, 223 62, Lund, Sweden
3
Department of Physics and Astronomy, Uppsala University, Box 516, 751 20, Uppsala, Sweden
4
TIFLab, Università degli Studi di Milano and INFN, Sezione di Milano, Via Celoria 16, 20133, Milan, Italy
Received:
18
January
2024
Accepted:
20
April
2024
Published online:
18
May
2024
In this work we present a new method for the combination of electroweak (EW) corrections at high energies, the so-called EW Sudakov logarithms (EWSL), and next-to-leading-order QCD predictions matched to parton-shower simulations (NLO+PS). Our approach is based on a reweighting procedure of NLO+PS events. In particular, both events with and without an extra hard emission from matrix elements are consistently reweighted via the inclusion of the corresponding EWSL contribution. We describe the technical details and the implementation in the MadGraph5_aMC@NLO framework. Via a completely automated procedure, events at this level of accuracy can be obtained for a vast class of hadroproduction processes. As a byproduct we provide results for phenomenologically relevant physical distributions from top-quark pair and Higgs boson associated production (
) and from the associated production of three Z gauge bosons (ZZZ).
© The Author(s) 2024
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Funded by SCOAP3.
