NNLO+PS predictions for Higgs production through bottom-quark fusion

TL;DR

This paper develops NNLO+PS predictions for Higgs production via bottom-quark fusion, incorporating advanced QCD corrections and adapting the extminnlo{} method for the Yukawa coupling's scale dependence, enhancing precision in both 5FS and 4FS schemes.

Contribution

It introduces a novel NNLO+PS framework for bottom-quark fusion Higgs production, including adaptations for the Yukawa coupling and comparisons across different schemes.

Findings

Enhanced precision in Higgs production predictions.

Successful adaptation of extminnlo{} for Yukawa coupling scale dependence.

Preliminary results show improved accuracy in the 4FS scheme.

Abstract

We present next-to-next-to-leading-order (NNLO) QCD corrections for Higgs production through bottom-quark annihilation (\bbH{}) matched to parton showers (NNLO+PS) using the \minnlo{} technique. The \minnlo{} method is adapted for the extra scale dependence due to the Yukawa coupling renormalized in the $\overline{\rm MS}$ scheme. The computation has been carried out in the five flavour scheme (5FS) neglecting the bottom mass. Results are compared against fixed-order predictions at NNLO and resummed predictions at next-to-next-to-leading-logarithmic (NNLL) accuracy. We also present preliminary results within the four-flavour scheme (4FS) setup, reaching a new level of precision in the massive scheme.