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arXiv · 2603.15762

$gg \to ZH$ at NLO matched to parton showers with ggxy and POWHEG

Joshua Davies·Kay Schönwald·Matthias Steinhauser·Daniel Stremmer
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Abstract

We implement the recently-calculated analytic expressions for the next-to-leading order QCD corrections to $gg\to ZH$ in ggxy. This provides a flexible framework for investigating partonic and hadronic cross sections for various top quark mass renormalization schemes. We augment the $Z$ boson with leptonic decays, including spin correlations and off-shell effects, and furthermore provide an interface to POWHEG. This enables simulations with parton showers, performed using Pythia.

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Joshua Davies, Kay Schönwald, Matthias Steinhauser, Daniel Stremmer. 2026-03-16. $gg \to ZH$ at NLO matched to parton showers with ggxy and POWHEG. https://arxiv.org/abs/2603.15762

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