Four-dimensional formulation of the sector improved residue subtraction

TL;DR

This paper extends the sector improved residue subtraction method to four dimensions, enabling more general and efficient calculations of complex quantum chromodynamics cross sections at higher orders.

Contribution

It generalizes the STRIPPER subtraction scheme to handle higher multiplicities in four-dimensional space, advancing N2LO QCD computations.

Findings

Generalized STRIPPER for higher multiplicities

Framework for N2LO cross section calculations

Enhanced computational efficiency in QCD

Abstract

We report on recent progress we made towards the four-dimensional formulation of the sector improved residue subtraction. We explain how the subtraction scheme STRIPPER is generalized to higher multiplicities and therefore furnishes a general framework for the calculation of next-to-next-to-leading order cross sections in perturbative QCD.