Speaker
Description
Varying the center of mass energy and the centrality in heavy-ion collisions allows us to investigate different regions of the QCD phase diagram. In our latest measurements at the PHENIX experiment at RHIC, we utilize Lévy-type sources to describe the measured HBT correlation functions at different beam energies and centralities. The different source parameters can yield different information about the source. The scale parameter $R$ is related to the physical size of the source, while the $\lambda$ parameter (the strength of the correlation function) may provide an indirect measurement of in-medium mass modification. The index of stability $\alpha$ is related to one of the critical exponents (the so-called correlation exponent $\eta$), so it may yield information on the nature of the quark-hadron phase transition. In this poster we report the current status of the analysis of the centrality and beam energy dependence of Lévy source parameters in Au+Au collisions from $\sqrt{s_{NN}}=15$ GeV to $\sqrt{s_{NN}}=200$ GeV.
| Content type | Experiment |
|---|---|
| Collaboration | PHENIX |
| Centralised submission by Collaboration | Presenter name already specified |
