Jet Production at NNLO: Exploring a New Scheme

TL;DR

This paper introduces a novel non-local subtraction scheme for calculating fully differential NNLO cross sections in dijet production and Higgs decays, improving precision in perturbative QCD predictions.

Contribution

The paper presents the first application of a non-local subtraction scheme to fully differential NNLO calculations for key collider processes.

Findings

Successful implementation of the new subtraction scheme

Comparison of slicing variables for NNLO correction accuracy

Enhanced precision in perturbative QCD predictions

Abstract

We consider dijet production in $e^+e^-$ collisions and in $H\to b{\bar b}$ decays at next-to-next-to-leading order (NNLO) in perturbative QCD. A new non-local subtraction scheme is applied, for the first time, to obtain the fully differential cross section for these benchmark processes. We discuss and explicitly evaluate the perturbative ingredients needed in the computation, and we compare the performance of different slicing variables to obtain the NNLO corrections.