Search for signatures of phase transition and critical point in heavy-ion collisions

0367971 - ÚJF 2013 RIV RU eng J - Journal Article
Tokarev, M. V. - Zborovský, Imrich - Kechechyan, A. - Alakhverdyants, A. V.
Search for signatures of phase transition and critical point in heavy-ion collisions.
Physics of Particles and Nuclei Letters. Roč. 8, č. 6 (2011), s. 533-541. ISSN 1547-4771.
[XX International Baldin Seminar on High Physics Problems. Dubna, 2010]
R&D Projects: GA ČR GA202/07/0079
Institutional research plan: CEZ:AV0Z10480505
Keywords : Nuclear particles
Subject RIV: BE - Theoretical Physics

The general concepts in the critical phenomena related with the notions of “scaling” and “universality” are considered. Behavior of various systems near a phase transition is displayed. Search for clear signatures of the phase transition of the nuclear matter and location of the critical point in heavy-ion collisions (HIC) is discussed. The experimental data on inclusive spectra measured in HIC at RHIC and SPS over a wide range of energies s N N 1/2 = 9–200 GeV are analyzed in the framework of z-scaling. A microscopic scenario of the constituent interactions is presented. Dependence of the energy loss on the momentum of the produced hadron, energy and centrality of the collision is studied. Self-similarity of the constituent interactions described in terms of momentum fractions is used to characterize the nuclear medium by “specific heat” and colliding nuclei by fractal dimensions.
Permanent Link: http://hdl.handle.net/11104/0202459