Strangeness Enhancement in Cu-Cu and Au-Au Collisions at root s(NN)=200 GeV
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
23/10/2013
23/10/2013
2012
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Resumo |
We report new STAR measurements of midrapidity yields for the Lambda, (Lambda) over bar, K-S(0), Xi(-), (Xi) over bar (+), Omega(-), (Omega) over bar (+) particles in Cu + Cu collisions at root s(NN) = 200 GeV, and midrapidity yields for the Lambda, (Lambda) over bar, K-S(0) particles in Au + Au at root s(NN) = 200 GeV. We show that, at a given number of participating nucleons, the production of strange hadrons is higher in Cu + Cu collisions than in Au + Au collisions at the same center-of-mass energy. We find that aspects of the enhancement factors for all particles can be described by a parametrization based on the fraction of participants that undergo multiple collisions. RHIC Operations Group RHIC Operations Group RCF at BNL RCF at BNL NERSC Center at LBNL NERSC Center at LBNL Open Science Grid consortium Open Science Grid consortium Offices of NP Offices of NP HEP within the U.S. DOE Office of Science Office of HEP within the US DOE Office of Science U.S. NSF, the Sloan Foundation U.S. NSF, the Sloan Foundation DFG cluster of excellence "Origin and Structure of the Universe" of Germany DFG cluster of excellence Origin and Structure of the Universe of Germany CNRS/IN2P3 CNRS/IN2P3 STFC STFC EPSRC of the U.K. EPSRC of the U.K. FAPESP CNPq of Brazil FAPESP CNPq of Brazil Ministry of Ed. and Sci. of the Russian Federation Ministry of Ed. and Sci. of the Russian Federation NNSFC NNSFC CAS CAS MoST MoST MoE of China MoE of China GA GA MSMT of the Czech Republic MSMT of the Czech Republic FOM FOM NWO of the Netherlands NWO of the Netherlands DAE DAE DST DST CSIR of India CSIR of India Polish Ministry of Sci. and Higher Ed. Polish Ministry of Sci. and Higher Ed. Korea Research Foundation Korea Research Foundation Ministry of Sci., Ed. and Sports of the Rep. of Croatia Ministry of Sci., Ed. and Sports of the Rep. of Croatia RosAtom of Russia RosAtom of Russia |
Identificador |
PHYSICAL REVIEW LETTERS, COLLEGE PK, v. 108, n. 6, supl. 1, Part 1, pp. 1209-1219, FEB 13, 2012 0031-9007 http://www.producao.usp.br/handle/BDPI/35717 10.1103/PhysRevLett.108.072301 |
Idioma(s) |
eng |
Publicador |
AMER PHYSICAL SOC COLLEGE PK |
Relação |
PHYSICAL REVIEW LETTERS |
Direitos |
openAccess Copyright AMER PHYSICAL SOC |
Palavras-Chave | #DEPENDENCE #PARTICLE #ENERGY #PHYSICS, MULTIDISCIPLINARY |
Tipo |
article original article publishedVersion |