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arXiv · 2605.13257

NLO QCD and parton-shower effects for Higgs-boson production in association with a hard photon via vector-boson fusion

Barbara Jäger·Simon Reinhardt
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Abstract

We present an implementation of Higgs-boson production in association with a hard, isolated photon via vector-boson fusion in the framework of the POWHEG BOX for the consistent matching of next-to-leading order QCD corrections with parton showers. The impact of parton-shower settings and non-perturbative effects on Higgs observables is studied and found to be small, while larger corrections are found for distributions of the sub-leading jets. Various approaches for the isolation of the photon are explored. For typical setups, the isolation strategy is found to have little impact on even the most sensitive observables.

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Barbara Jäger, Simon Reinhardt. 2026-05-13. NLO QCD and parton-shower effects for Higgs-boson production in association with a hard photon via vector-boson fusion. https://arxiv.org/abs/2605.13257

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