Femtoscopically Probing the Freeze-out Configuration in Heavy Ion Collisions

Understand

Two-particle femtoscopy reveals the space-time substructure of the freeze-out configuration from heavy ion collisions.

• Detailed fingerprints of bulk collectivity are evident in space-momentum correlations, which have been systematically measured as a function of particle type, three-momentum, and collision conditions.
• A clear scenario, dominated by hydrodynamic-type flow emerges.
• Reproducing the strength and features of the femtoscopic signals in models involves important physical quantities like the Equation of State, as well as less fundamental technical details.