Are minimal conditions for collectivity met in e+e- collisions?

TL;DR

This paper investigates whether e+e- collisions can exhibit collective behavior similar to other high-energy collision systems by analyzing signatures using the AMPT model.

Contribution

It explores the potential for collectivity in e+e- collisions using the AMPT framework, which has not been extensively studied before.

Findings

Preliminary signatures of collectivity are examined in e+e- collisions.

The study assesses the applicability of hydrodynamic models to e+e- systems.

Results suggest conditions under which collectivity may or may not occur in e+e- collisions.

Abstract

Signatures of collective behavior have been measured in highly relativistic p+p collisions, as well as in p+A, d+A, and 3He+A collisions. Numerous particle correlation measurements in these systems have been successfully described by calculations based on viscous hydrodynamic and transport models. These observations raise the question of the minimum necessary conditions for a system to exhibit collectivity. Recently, numerous scientists have raised the question of whether the quarks and gluons generated in e+e- collisions may satisfy these minimum conditions. In this paper we explore possible signatures of collectivity, or lack thereof, in e+e- collisions utilizing A Multi-Phase Transport (AMPT) framework which comprises melted color strings, parton scattering, hadronization, and hadron re-scattering.