# Finite quark-mass effects in the NNLOPS POWHEG+MiNLO Higgs generator

## TL;DR

This paper enhances the NNLOPS Higgs boson production generator by incorporating finite top and bottom quark mass effects at NLO accuracy, analyzing associated uncertainties, and providing phenomenological results.

## Contribution

It introduces a method to include finite quark-mass effects in the NNLOPS Higgs generator at NLO accuracy, addressing uncertainties in bottom-mass logarithmic effects.

## Key findings

- Finite quark-mass effects are significant in Higgs production simulations.
- Uncertainty from bottom-mass effects is within scale variation bounds.
- Phenomenological results demonstrate the impact of mass effects on predictions.

## Abstract

We include finite top- and bottom-mass effects in the next-to-next-to-leading order parton shower (NNLOPS) event generator for inclusive Higgs boson production in gluon fusion based upon the POWHEG+MiNLO approach. Since fixed-order results for quark-mass effects only reach NLO accuracy, we add them to the NNLOPS generator at that accuracy. We explore uncertainties related to the unknown all-order logarithmic structure of bottom-mass effects by comparing the assumption of full exponentiation to no exponentiation at all. Phenomenological results showing the effects of finite quark-masses in the NNLOPS simulation are presented. These suggest that the aforementioned uncertainty is well contained within the envelope of plain renormalization and factorization scale uncertainties.