Super-leading logarithms in non-global observables in QCD: Colour basis independent calculation

TL;DR

This paper recalculates super-leading logarithmic contributions in non-global QCD observables using a colour basis independent approach, clarifying their structure and enabling calculations for gluon scattering for the first time.

Contribution

It introduces a colour basis independent method to compute super-leading logarithms, advancing understanding of their structure and extending calculations to gluon scattering processes.

Findings

Recalculated super-leading logarithmic contributions in a new notation.

Clarified the structure and origin of super-leading terms.

Enabled calculations for gluon scattering processes.

Abstract

In a previous paper we reported the discovery of super-leading logarithmic terms in a non-global QCD observable. In this short update we recalculate the first super-leading logarithmic contribution to the 'gaps between jets' cross-section using a colour basis independent notation. This sheds light on the structure and origin of the super-leading terms and allows them to be calculated for gluon scattering processes for the first time.