Speaker
Mr
Daniel Wielanek
(Warsaw University of Technology, Faculty of Physics)
Description
Heay Ion Collsion (HIC) are used for study properties of matter that
existed at early stage of the universe. One of main topics of those studies
is structure of phase diargram of strongly interactin matter, different
parts of this diagram can be studied by collisions of heavy ions with
different energies. Such measurements will be also done in MPD
(Multi-Purpose Detector) in NICA facility with is now under construction in
Dubna. One of method used in analysys of HIC is femtoscopy, this method
uses two-particle correlations to obtain information about space-time
evolution of source of the particles. As part of preparations for MPD
experiment some analysis with simulated data where performed. Three sets of
simulations has been made, with and without viscosity of bulk dense matter,
and with different type of phase transtion from Quark Gluon Plasma to
hadronic matter - one of most interesting problems that will be studied by
using MPD. Those analysis shown that system that creates particles during
collision lives longer when first order phase transition occurs what was
expected by theorist, however standard femtoscopic measurements are not
suitable tool for study such effects as it was expected. It's mean that new
methods or combining more observables toghether must be used like imaging
methods.
Primary author
Mr
Daniel Wielanek
(Warsaw University of Technology, Faculty of Physics)
