High-pT π0 suppression in Au+Au collisions at S=200 GeV
Abstract
Neutral pions with pT = 1-8 GeV/c have been measured for 9 centrality classes in Ai+Au collisions at S=200 GeV by the PHENIX experiment at RHIC. The π0 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 pT and centrality. For the most central bin, the deficit amounts to a factor ∼2.5 at pT ∼2 GeV/c gradually increasing to a factor ∼6 at pT ∼8 GeV/c.
- Publication:
-
Nuclear Physics A
- Pub Date:
- March 2003
- DOI:
- 10.1016/S0375-9474(02)01480-X
- arXiv:
- arXiv:hep-ex/0209051
- Bibcode:
- 2003NuPhA.715..749D
- Keywords:
-
- High Energy Physics - Experiment;
- Nuclear Experiment
- E-Print:
- 4 pages, 4 figures. Talk given at Quark Matter 2002 (QM 2002), Nantes, Bretagne, France, 18-24 Jul 2002. Minor corrections in text