Speaker
Description
The RHIC beam energy scan program allows us to investigate the phase-diagram of QCD matter. The nature of the quark-hadron transition can be studied through analyzing the space-time structure of the hadron emission source. One of the best tools to gain information about the source is the measurement of Bose-Einstein or HBT correlations of identical bosons. In our latest measurements, we utilize Levy-type sources to describe the measured correlation functions. One of the source parameters, 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, particularly it may shed light on the location of the critical endpoint on the phase-diagram. In this poster we report the current status of the analysis of the Levy source parameters (the intercept parameter $\lambda$, the index of stability $\alpha$, and the scale parameter $R$) as a function of transverse momentum and beam energy in Au+Au collisions at $\sqrt{s_{NN}}$ = 15, 19, 27, 39, 62 and 200 GeV.
| Preferred Track | Correlations and Fluctuations |
|---|---|
| Collaboration | PHENIX |
