Observables Probing the Perturbative-Nonperturbative Transition Region in QCD

TL;DR

This paper discusses how high-statistics $e^+e^-$ collision data at the $Z^0$ resonance can be used to study the transition from perturbative to nonperturbative QCD by analyzing specific observables sensitive to hadronization effects.

Contribution

It introduces two observables that serve as tools to investigate the hadronization process in the perturbative-nonperturbative transition region of QCD.

Findings

Strong two-jet cuts suppress perturbative activity.

Hadronization effects become more prominent in these selected events.

Proposed observables can enhance understanding of the hadronization mechanism.

Abstract

Benefiting from the high statistics from $e^+e^-$ experiments at the $Z^0$ resonance, it is possible to impose strong two-jet cuts on the data without losing the statistical significance. In these events perturbative activity is suppressed and hadronization effects can be more prominent. I give two examples of observables that can be important tools for a more detailed study of the hadronization mechanism.