Speakers
Description
The spatiotemporal properties of the system created in heavy-ion collisions, including key information about its size and dynamics, can be studied via femtoscopy. In this talk, a differential study of the system size of Pb–Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.36 TeV with ALICE Run 3 data using correlations in momentum space of charged pion–pion pairs is presented.
In this study, the spherical harmonics decomposition of the correlation functions ($C^0_0$ , Re$C^0_2$ , and Re$C^2_2$) are analysed in several relative transverse momenta ($k_{\rm T}$) of pion pairs and centrality bins. The three-dimensional radii of the source are extracted by fitting the correlation functions as a function of $k_{\rm T}$ and centrality. The results show the presence of collectivity in the system, as observed previously at $\sqrt{s_{\rm NN}}$ = 2.76 TeV with ALICE Run 1 data. This study provides the baseline for further femtoscopic analyses in Pb–Pb collisions, serves as a benchmark for models, and provides constraints for the evolution of the collision.
| Category | Experiment |
|---|---|
| Collaboration (if applicable) | ALICE |
