Analytic calculation of Energy-Energy Correlation in $e^+ e^-$ annihilation at NLO

TL;DR

This paper provides the first fully analytic NLO calculation of the Energy-Energy Correlation observable in electron-positron annihilation, enhancing understanding of QCD event shapes beyond leading order.

Contribution

It introduces a novel analytic approach to compute the Energy-Energy Correlation at NLO in QCD, applicable to other event shape observables.

Findings

First analytic NLO calculation of EEC in e+e- annihilation

Reveals the analytic structure of event shape observables beyond LO

Motivates further analytic studies of complex event shapes

Abstract

We present the first fully analytic calculation of the Quantum Chromodynamics (QCD) event shape observable Energy-Energy Correlation in electron-positron annihilation at Next-To-Leading Order (NLO). This result sheds light on the analytic structure of the event shape observables beyond Leading Order (LO) and serves as a motivation to employ our methods in the investigation of other event shape observables that so far have not been calculated analytically.