Disentangling singularities with non-linear mappings - a new method for NNLO

TL;DR

This paper introduces a novel systematic method employing non-linear mappings to factorise singularities, demonstrated through a detailed NNLO calculation of Higgs decay into Bottom-quarks.

Contribution

The paper presents a new method for factorising singularities using non-linear mappings, applied to NNLO calculations of Higgs decay processes.

Findings

Successful factorisation of singularities in NNLO calculations

Accurate differential decay width of Higgs to Bottom-quarks

Demonstration of the method's effectiveness in complex calculations

Abstract

We present a systematic method to factorise singularities using non-linear mappings. As a first application of the method the fully differential NNLO calculation of the partial decay width of a Higgs boson into Bottom-quarks is presented.