Three-jet event-shapes: first NLO+NLL+1/Q results

TL;DR

This paper presents advanced theoretical predictions for three-jet event-shape distributions in e+e- annihilation, combining NLO, NLL resummation, and non-perturbative corrections, enabling detailed comparison with experimental data.

Contribution

It provides the first comprehensive comparison of data with state-of-the-art NLO+NLL+power correction predictions for three-jet event-shapes.

Findings

Good agreement between data and theoretical predictions.

Insights into hadronisation effects based on jet geometry.

Enhanced understanding of QCD dynamics in multi-jet events.

Abstract

Three-jet event-shape distributions can be exploited to investigate the dependence of hadronisation effects on the colour and the geometry of the underlying hard event. We present here the first comparison of data in e+e- annihilation and state-of-the-art theoretical predictions, including resummation of large logarithms at next-to-leading logarithmic accuracy matched to exact next-to-leading order and leading non-perturbative power corrections.