Centrality Dependence of J/psi Production in Au+Au and Cu+Cu Collisions by the PHENIX Experiment at RHIC

Conference · Mon Jan 01 04:00:00 EST 2007

OSTI ID:931204

Gunji, T. ^[1]; Awes, Terry C ^[2]; Batsouli, Sotiria ^[3]; Cianciolo, Vince ^[2]; Efremenko, Yuri ^[3]; Read, Jr, Kenneth F ^[2]; Silvermyr, David O ^[2]; Sorensen, Soren P ^[4]; Stankus, Paul W ^[2]; Young, Glenn R ^[2]; Zhang, Chun ^[3]

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1. University of Tokyo, Tokyo, Japan
2. ORNL
3. University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL)
4. University of Tennessee, Knoxville (UTK)

J/{psi} production has been measured in Au+Au and Cu+Cu at {radical}(s{sub NN})=200 GeV by the PHENIX experiment at the relativistic heavy ion collider (RHIC) during 2004 and 2005, respectively, at mid-rapidity (|{eta}|{le} 0.35) via J/{psi} {yields} e{sup +}e{sup -} decay and at forward rapidity (1.2 {le}|{eta}|{le} 2.2) via J/{psi} {yields} {mu}{sup +}{mu}{sup -} decay. The nuclear modification factor (RAA) of J/{psi} is presented as a function of the collision centrality for Au+Au collisions (final results) and Cu+Cu collisions (preliminary results) in both rapidity windows. These results are compared to SPS results at lower energy and to various theoretical calculations.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 931204
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
74 ATOMIC AND MOLECULAR PHYSICS
COLLISIONS
DECAY
HEAVY IONS
MODIFICATIONS
PARTICLE RAPIDITY
PRODUCTION
QUARK MATTER
WINDOWS