Cluster Hadronisation in Sherpa

TL;DR

This paper introduces the Sherpa cluster hadronization model and a non-perturbative colour reconnection model, tuned to data from electron-positron annihilation, demonstrating their impact on hadronization distributions.

Contribution

The paper presents a new hadronization model within Sherpa and a simple colour reconnection model, with tuning to experimental data across different parton shower implementations.

Findings

Model successfully reproduces key hadronization distributions

Demonstrates sensitivity of distributions to hadronization effects

Provides a framework for non-perturbative QCD modeling

Abstract

We present the Sherpa cluster hadronization model and a simple model for non-perturbative colour reconnections. Using two different parton shower implementations we tuned the model to data and we show typical resulting distributions that are sensitive to hadronization effects in $e^+e^-$--annihilations into hadrons.