Enhanced strange baryon production in Au+Au collisions compared to p+p at root s(NN)=200 GeV
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
18/04/2012
18/04/2012
2008
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Resumo |
We report on the observed differences in production rates of strange and multistrange baryons in Au+Au collisions at s(NN)=200 GeV compared to p+p interactions at the same energy. The strange baryon yields in Au+Au collisions, when scaled down by the number of participating nucleons, are enhanced relative to those measured in p+p reactions. The enhancement observed increases with the strangeness content of the baryon, and it increases for all strange baryons with collision centrality. The enhancement is qualitatively similar to that observed at the lower collision energy s(NN)=17.3 GeV. The previous observations are for the bulk production, while at intermediate p(T),1 < p(T)< 4 GeV/c, the strange baryons even exceed binary scaling from p+p yields. Relativistic Heavy Ion Collider (RHIC) National Energy Research Scientific Computing Center (NERSC) U.S. Department of Energy (DOE) U.S. National Science Foundation (NSF) Centre National de la Recherche Scientifique (CNRS) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Ministry of Science and Technology of China (MoST) Foundation for Fundamental Research on Matter (FOM) Department of Atomic Energy of India (DAE) Department of Science and Technology of India (DST) India Council for Scientific and Industrial Research (CSIR) |
Identificador |
PHYSICAL REVIEW C, NEW YORK, v.77, n.4, 2008 0556-2813 http://producao.usp.br/handle/BDPI/15015 10.1103/PhysRevC.77.044908 |
Idioma(s) |
eng |
Publicador |
AMER PHYSICAL SOC NEW YORK |
Relação |
Physical Review C |
Direitos |
restrictedAccess Copyright AMER PHYSICAL SOC |
Palavras-Chave | #LARGE TRANSVERSE-MOMENTUM #PB-PB COLLISIONS #HADRONIC COLLISIONS #D+AU COLLISIONS #REACTION VOLUME #DISTRIBUTIONS #RAPIDITY #SPECTRA #Physics, Nuclear |
Tipo |
article original article publishedVersion |