QCD corrections for Pseudoscalar Higgs decay to 3 partons at higher orders in dimensional regulator

TL;DR

This paper calculates second-order QCD corrections to pseudoscalar Higgs decay into three partons, enhancing precision in predicting Higgs-related processes at colliders.

Contribution

It provides the first detailed two-loop amplitude calculations for pseudoscalar Higgs decay to three partons in the effective theory framework.

Findings

Computed one and two-loop amplitudes for $A\to ggg$ and $A\to q\bar{q}g$

Results are crucial for differential Higgs distribution predictions at colliders

Enhances theoretical precision for pseudoscalar Higgs decay processes

Abstract

In this contribution, we present our recent study on the second-order corrections of pseudo-scalar($A$) Higgs decay to three partons, at higher orders in the dimensional regulator. We have studied the one and two-loop amplitudes for processes, $A\to ggg$ and $A\to q\bar{q}g$ in the effective theory framework. Our results, after suitable crossings of the external momenta, are important ingredients for predicting the differential distribution of the pseudo-scalar Higgs boson in association with a jet at hadron colliders.