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

TL;DR

This paper implements NNLO QCD corrections with top-quark mass effects for double Higgs production in GENEVA, enhancing the realism of simulations by including finite mass effects and resummation of large logarithms.

Contribution

It extends previous infinite top-mass approximation work by incorporating full top-quark mass effects and NNLL' resummation in a matched parton shower framework.

Findings

Validation against NNLO predictions shows good agreement.

Finite top-mass effects significantly impact the results.

Resummation improves the accuracy of the simulation.

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 all the known top-quark mass effects and the resummation of large logarithms of the zero-jettiness $\mathcal{T}_0$, up to NNLL$^\prime$ accuracy. This work extends our previous study, which was performed in the $m_t\to \infty$ 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 $m_t\to \infty$ previous implementation.