QCD corrections to H -> gg in FDR

TL;DR

This paper applies the Four Dimensional Regularization (FDR) method to compute next-to-leading order QCD corrections to the Higgs decay into gluons, demonstrating FDR's effectiveness in handling divergences in quantum field theory calculations.

Contribution

It introduces the application of FDR to NLO QCD corrections for H -> gg, providing detailed methodology and translation rules to dimensional regularization.

Findings

FDR successfully reproduces known NLO results for H -> gg.

The paper clarifies how to handle divergences within FDR.

Provides translation rules between FDR and dimensional regularization.

Abstract

I apply FDR -- a recently introduced Four Dimensional Regularization approach to quantum field theories -- to compute the NLO QCD corrections to H -> gg in the large top mass limit. The calculation involves all key ingredients of massless QCD, namely ultraviolet, infrared and collinear divergences, besides alpha_s renormalization. I show in detail how the correct result emerges in FDR, and discuss the translation rules to dimensional regularization.