Speaker
Dr
Oana Ristea
(University of Bucharest, Faculty of Physics)
Description
Transverse momentum distributions of the final-state particles are very useful observables for the understanding of the dynamics of the high energy collisions. It has been shown that the Tsallis distribution gives an excellent description of pT spectra measured in relativistic nuclear collisions at different energies and under different kinematical conditions of the data collection. The Tsallis distribution parameters can be related to the temperature fluctuations and the non-equilibrium degree of the produced system. In this work, a study of Tsallis fits performed to the transverse momentum spectra obtained in p-p and Au-Au collisions at RHIC energies, will be presented in order to obtain valuable insights on the thermodynamical evolution of the hot and dense partonic matter. The centrality and rapidity dependence of the nonextensivity parameter q will be analized. In addition, comparisons with different simulation code predictions (UrQMD, HIJING, AMPT) will be shown and discussed.
| On behalf of collaboration: | NONE |
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Author
Dr
Oana Ristea
(University of Bucharest, Faculty of Physics)
Co-authors
Prof.
Alexandru Jipa
(Universit of Bucharest, Faculty of Physics)
Prof.
Calin Besliu
(University of Bucharest, Faculty of Physics)
Dr
Catalin Ristea
(University of Bucharest, Institute of Space Science)
Dr
Dan Argintaru
(Constanta Maritime University)
Prof.
Ionel Lazanu
(University of Bucharest, Faculty of Physics)
Dr
Marius Calin
(University of Bucharest, Faculty of Physics)
Nicolae Tuturas
(University of Bucharest, Faculty of Physics)
Dr
Tiberiu Esanu
(National Institute of Nuclear Physics and Engineering „Horia Hulubei” Bucharest)
Dr
Valerica Baban
(Constanta Maritime University)
