The infrared structure of e+ e- --> 3 jets at NNLO reloaded

TL;DR

This paper analyzes the infrared singularity structure of e+ e- --> 3 jets at NNLO, focusing on soft gluons, and develops subtraction terms for numerical simulations.

Contribution

It provides a detailed characterization of infrared singularities at NNLO for three-jet production, enabling improved subtraction methods.

Findings

Detailed infrared singularity structure identified

Subtraction terms constructed for Monte Carlo implementation

Enhanced understanding of soft gluon singularities

Abstract

This paper gives detailed information on the structure of the infrared singularities for the process e+ e- --> 3 jets at next-to-next-to-leading order in perturbation theory. Particular emphasis is put on singularities associated to soft gluons. The knowledge of the singularity structure allows the construction of appropriate subtraction terms, which in turn can be implemented into a numerical Monte Carlo program.