Azimuthally Integrated HBT Parameters for Charged Pions in Nucleus-Nucleus Interactions versus Collision Energy

Abstract EN

The energy dependence of spatiotemporal characteristics of particle emission region is studied for charged pions produced in nuclear collisions.

No dramatic change is observed for the HBT parameters with increasing of the center-of-mass (c.m.) energy per nucleon-nucleon pair, sNN, for sNN of a few GeV to a few TeV.

The emission duration is obtained to be almost independent of the c.m.

energy within the measurement uncertainties.

The analytic function is suggested for a smooth approximation of the energy dependence of the main HBT parameters.

The fits demonstrate reasonable agreement with the experimental data.

Predictions are made for future LHC and FCC experiments.