J/{psi} Production versus Centrality, Transverse Momentum, and Rapidity in Au+Au Collisions at {radical}(s{sub NN})=200 GeV
- University of Colorado, Boulder, Colorado 80309 (United States)
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region (Russian Federation)
- Columbia University, New York, New York 10027 (United States) and NevisLaboratories, Irvington, New York 10533 (US)
The PHENIX experiment at the BNL Relativistic Heavy Ion Collider (RHIC)has measured J/{psi} production for rapidities -2.2<y<2.2 in Au+Au collisions at {radical}(s{sub NN})=200 GeV. The J/{psi} invariant yield and nuclear modification factor R{sub AA} as a function of centrality,transverse momentum, and rapidity are reported. A suppression of J/{psi} relative to binary collision scaling of proton-protonreaction yields is observed. Models which describe the lower energy J/{psi} data at the CERN Super Proton Synchrotron invoking only J/{psi} destruction based on the local medium density predicta significantly larger suppression at RHIC and more suppression at midrapiditythan at forward rapidity. Both trends are contradicted by our data.
- OSTI ID:
- 20951462
- Journal Information:
- Physical Review Letters, Vol. 98, Issue 23; Other Information: DOI: 10.1103/PhysRevLett.98.232301; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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