Femtoscopy: The Way Back in the Energy Scale from ALICE to the NICA Energies

Abstract

The main features of femtoscopy measurements in heavy-ion collisions at high energies are understood as a manifestation of the strong collective flow and well-interpreted within hydrodynamic models with a crossover. In this work, we discuss possibilities for observing the change from a first order phase transition expected at the NICA energies (√ s N N = 4-11 GeV) to a crossover one with the femtoscopy observables using the vHLLE+UrQMD model.