Computational analysis reveals key flavour-scheme uncertainties in Higgs production with charm quarks, highlighting practical simulation strategies for LHC analyses.
We present a detailed NLO+PS study of Higgs-boson production in association with charm and bottom quarks, with particular focus on the modelling of the H+c final state. We systematically compare predictions in massive and massless flavour schemes, quantify scale and flavour-scheme uncertainties, and assess the impact of interference and loop-induced contributions. Special emphasis is placed on the Higgs production via charm Yukawa fusion, for which we compare NLO+PS predictions with a NNLO+PS calculation of cc̄H production in the four-flavour scheme at 13.6 TeV. Based on these results, we provide the first practical recommendations for the simulation of cc̄H production in LHC analyses.
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Bevilacqua et al. (2026) studied this question.
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