Suppression Pattern of Neutral Pions at High Transverse Momentum in Au plus Au Collisions at root S(NN)=200 GeV and Constraints on Medium Transport Coefficients
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
18/04/2012
18/04/2012
2008
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Resumo |
For Au + Au collisions at 200 GeV, we measure neutral pion production with good statistics for transverse momentum, p(T), up to 20 GeV/c. A fivefold suppression is found, which is essentially constant for 5 < p(T) < 20 GeV/c. Experimental uncertainties are small enough to constrain any model-dependent parametrization for the transport coefficient of the medium, e. g., <(q) over cap > in the parton quenching model. The spectral shape is similar for all collision classes, and the suppression does not saturate in Au + Au collisions. Office of Nuclear Physics in DOE Office of Science National Science Foundation NSF (USA) MEXT JSPS - Japan Society for the Promotion of Science (Japan) CNPq FAPESP (Brazil) NSFC (China) MSMT (Czech Republic) Centre National de la Recherche Scientifique - IN2P3/CNRS CEA (France) BMBF - Bundesministerium fur Bildung und Forschung, Germany (DAAD) Deutscher Akademischer Austausch Dienst, Germany Alexander von Humboldt Foundation (Germany) OTKA (Hungary) (DAE) Department of Atomic Energy, India ISF - Israel Science Foundation (Israel) KRF KOSEF (Korea) MES Ministry of Education and Science of the Russian Federation RAS Russia Academy of Sciences FAAE (Russia) VR (Sweden) KAW (Sweden) U.S. CRDF US-Hungarian NSF-OTKA-MTA (BSF) US-Israel Binational Science Foundation |
Identificador |
PHYSICAL REVIEW LETTERS, v.101, n.23, 2008 0031-9007 http://producao.usp.br/handle/BDPI/16106 10.1103/PhysRevLett.101.232301 |
Idioma(s) |
eng |
Publicador |
AMER PHYSICAL SOC |
Relação |
Physical Review Letters |
Direitos |
restrictedAccess Copyright AMER PHYSICAL SOC |
Palavras-Chave | #NUCLEUS-NUCLEUS COLLISIONS #ENERGY-LOSS #MATTER #Physics, Multidisciplinary |
Tipo |
article original article publishedVersion |