NNLO+PS double Higgs boson production with top-quark mass corrections in GENEVA

Abstract

We present the implementation of the NNLO QCD corrections to double Higgs boson production at hadron colliders in Geneva, matched to the parton shower. We include top-quark mass effects and the resummation of large logarithms of the zero-jettiness \( {\mathcal{T}}_0 \), up to NNLL^′ accuracy. This work extends our previous study, which was performed in the m_t → ∞ infinite top-quark mass approximation, providing a more realistic simulation framework for Higgs boson pair production. We validate our approach against NNLO predictions by Matrix and assess the importance of mass effects comparing with our m_t → ∞ previous implementation.