11–17 May 2025
Zipeng Bay Hall
Asia/Shanghai timezone

Measuring the spatio-temporal characteristics of meduim produced in heavy-ion collisions

12 May 2025, 09:25
20m
Zipeng Bay Hall

Zipeng Bay Hall

Zipeng Mountain Guangyuan International Conference Center, Hefei, Anhui, China, 231201

Speaker

Egor Nedorezov (JINR)

Description

Recently, a large amount of experimental data has been collected in high-energy physics to study the properties of nuclear matter. One of the main interests is to investigate the phase diagram and localize phase transitions from hadronic to quark-gluonic matter. Different techniques are employed to study the hot matter. One of these is femtoscopy, which uses two-particle correlations to extract spatio-temporal characteristics of the emission source. Another approach involves obtaining thermodynamic parameters from the momentum distributions of produced particles using various theoretical models. In this research, we refine our previous method for determining the spatio-temporal characteristics of the fireball by calculating its geometrical dimensions and lifetime using femtoscopy. Specifically, the system volume is calculated in a cylindrical coordinate system, taking into account the radial and longitudinal expansion of the medium within the framework of the Blast-Wave model. A comparative analysis is performed between femtoscopic volumes and those obtained using the Tsallis statistical fit to estimate the system size at kinetic freeze-out and its dependence on collision centrality and energy.

Authors

Presentation materials