# Logarithmic Accuracy of Angular-Ordered Parton Showers

## TL;DR

This paper analyzes the logarithmic accuracy of angular-ordered parton showers, proposing a new evolution variable that improves both theoretical accuracy and performance in describing event shapes.

## Contribution

It introduces a novel evolution variable for angular-ordered parton showers that enhances logarithmic accuracy and non-logarithmic region performance.

## Key findings

- New evolution variable improves logarithmic accuracy
- Enhanced description of $e^+e^-$ event shapes
- Better performance away from singular regions

## Abstract

We study the logarithmic accuracy of angular-ordered parton showers by considering the singular limits of multiple emission matrix elements. This allows us to consider different choices for the evolution variable and propose a new choice which has both the correct logarithmic behaviour and improved performance away from the singular regions. In particular the description of $e^+e^-$ event shapes in the non-logarithmic region is significantly improved.