Scaling properties at freeze-out in relativistic heavy-ion collisions

Journal Article · Tue Mar 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.83.034910· OSTI ID:21499521

Aggarwal, M M; Bhati, A K; Pruthi, N K ^[1]; Ahammed, Z; Dong, X; Grebenyuk, O; Hjort, E; Jacobs, P; Kikola, D P; Kiryluk, J; Klein, S R; Masui, H; Matis, H S; Naglis, M; Odyniec, G; Olson, D; Ploskon, M A; Poskanzer, A M; Powell, C B; Ritter, H G ^[2]

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1. Panjab University, Chandigarh 160014 (India)
2. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

Identified charged pion, kaon, and proton spectra are used to explore the system size dependence of bulk freeze-out properties in Cu+Cu collisions at {radical}(s{sub NN})=200 and 62.4 GeV. The data are studied with hydrodynamically motivated blast-wave and statistical model frameworks in order to characterize the freeze-out properties of the system. The dependence of freeze-out parameters on beam energy and collision centrality is discussed. Using the existing results from Au + Au and pp collisions, the dependence of freeze-out parameters on the system size is also explored. This multidimensional systematic study furthers our understanding of the QCD phase diagram revealing the importance of the initial geometrical overlap of the colliding ions. The analysis of Cu+Cu collisions expands the system size dependence studies from Au+Au data with detailed measurements in the smaller system. The systematic trends of the bulk freeze-out properties of charged particles is studied with respect to the total charged particle multiplicity at midrapidity, exploring the influence of initial state effects.

• OSTI ID: 21499521
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 83, Issue 3; Other Information: DOI: 10.1103/PhysRevC.83.034910; (c) 2011 American Institute of Physics; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ATOM-ATOM COLLISIONS
COLLISIONS
COPPER
FREEZING OUT
GEV RANGE
GOLD
HEAVY ION REACTIONS
HYDRODYNAMIC MODEL
KAONS
MULTIPLICITY
PHASE DIAGRAMS
PIONS
PROTON SPECTRA
PROTON-PROTON INTERACTIONS
QUANTUM CHROMODYNAMICS
RELATIVISTIC RANGE
SCALING
STATISTICAL MODELS
ATOM COLLISIONS
BARYON-BARYON INTERACTIONS
BOSONS
DIAGRAMS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FIELD THEORIES
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
MATHEMATICAL MODELS
MESONS
METALS
NUCLEAR REACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PROTON-NUCLEON INTERACTIONS
PSEUDOSCALAR MESONS
QUANTUM FIELD THEORY
SEPARATION PROCESSES
SPECTRA
STRANGE MESONS
STRANGE PARTICLES
THERMODYNAMIC MODEL
TRANSITION ELEMENTS