High-p_T pi^0 suppression in Au+Au collisions at sqrt(s_NN) = 200 GeV
arXiv:hep-ex/0209051 · doi:10.1016/S0375-9474(02)01480-X
Abstract
Neutral pions with p_T = 1 - 8 GeV/c have been measured for 9 different centrality classes in Au+Au collisions at sqrt(s_NN) = 200 GeV by the PHENIX experiment at RHIC. The pi^0 multiplicity in central reactions is significantly below the binary collision scaled yields from both peripheral Au+Au and pp reactions. The observed suppression sets in for the 50-70% centrality class and increases with p_T and centrality. For the most central bin, the deficit amounts to a factor ~2.5 at p_T ~ 2 GeV/c gradually increasing to a factor ~6 at p_T ~ 8 GeV/c.
4 pages, 4 figures. Talk given at Quark Matter 2002 (QM 2002), Nantes, Bretagne, France, 18-24 Jul 2002. Minor corrections in text
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