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

Understand

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.