Scaling properties at freeze-out in relativistic heavy-ion collisions
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
18/04/2012
18/04/2012
2011
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Resumo |
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 root s(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. RHIC Operations Group RCF at BNL NERSC Center at LBNL Open Science Grid consortium Office of NP within the US DOE Office of Science Office of HEP within the US DOE Office of Science US NSF National Science Foundation Sloan Foundation Deutsche Forschungsgemeinschaft - DFG of Germany Centre National de la Recherche Scientifique - CNRS/IN2P3 STFC EPSRC of the United Kingdom FAPESP CNPq of Brazil MES Ministry of Ed. and Sci. of the Russian Federation National Natural Science Foundation of China (NNSFC) CAS of China MoST of China MoE of China MSMT of the Czech Republic FOM of the Netherlands NWO of the Netherlands (DAE) Department of Atomic Energy, India (DST) Department of Science and Technology, India (CSIR) Council of Scientific and Industrial Research - India Polish Ministry of Sci. and Higher Ed. Ministry of Sci., Ed. and Sports of the Rep. of Croatia MES Russian Ministry of Sci. and Tech. RosAtom of Russia Korea Research Foundation (KRF) GACR Grant Agency of the Academy of Sciences of the Czech Republic |
Identificador |
PHYSICAL REVIEW C, v.83, n.3, 2011 0556-2813 http://producao.usp.br/handle/BDPI/16282 10.1103/PhysRevC.83.034910 |
Idioma(s) |
eng |
Publicador |
AMER PHYSICAL SOC |
Relação |
Physical Review C |
Direitos |
restrictedAccess Copyright AMER PHYSICAL SOC |
Palavras-Chave | #QCD #THERMODYNAMICS #SEARCH #Physics, Nuclear |
Tipo |
article original article publishedVersion |