Resummed predictions for jet-resolution scales in multijet production in $e^+e^-$ annihilation

TL;DR

This paper provides the first resummed predictions at NLO + NLL' accuracy for jet-resolution scales in multijet production in electron-positron collisions, using the CAESAR formalism within SHERPA.

Contribution

It introduces novel resummed predictions for jet-resolution scales in multijet events at NLO + NLL' accuracy, incorporating subleading colour effects and comparisons with other models.

Findings

Resummed predictions at NLO + NLL' accuracy for $y_{n,n+1}$ scales.

Impact of subleading colour contributions analyzed.

Comparison with SHERPA and VINCIA predictions shows consistency.

Abstract

We present for the first time resummed predictions at NLO + NLL' accuracy for the Durham jet-resolution scales $y_{n,n+1}$ in multijet production in $e^+e^-$ collisions. Results are obtained using an implementation of the well known CAESAR formalism within the SHERPA framework. For the 4-, 5- and 6-jet resolutions we discuss in particular the impact of subleading colour contributions and compare to matrix-element plus parton-shower predictions from SHERPA and VINCIA.