Nuclear Physics Seminar
Space-time picture of the heavy-ion collision
Adam Kisiel (Warsaw University of Technology)
The creation of the new state of matter, the Quark Gluon Plasma, is
expected in AuAu collisions at RHIC accelerator. To claim its discovery
several properties must be observed, one of which is the collective
behavior of matter, or flow. Femtoscopic measurements from the STAR
experiment, including traditional HBT radii and a space-time shifts in
emission of different particle species are shown to provide such
evidence. The latter are obtained via the technique of non-identical
particle correlations, which is briefly introduced. Studies of the
simple model of the freeze-out process in the heavy-ion collision enable
to disentangle the influence of flow and resonance decay and propagation
on these observables, showing the importance of taking into account both
effects in a self-consistent way.
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