"Suppression Pattern of Neutral Pions at High Transverse Momentum in Au" by Andrew Marshall Adare, Sergey V. Afanasiev et al.
 

Document Type

Article

Publication Title

Physical Review Letters

Abstract

For Au þ Au collisions at 200 GeV, we measure neutral pion production with good statistics for transverse momentum, pT, up to 20 GeV=c. A fivefold suppression is found, which is essentially constant for 5 < pT < 20 GeV=c. Experimental uncertainties are small enough to constrain any model-dependent parametrization for the transport coefficient of the medium, e.g., hq^i in the parton quenching model. The spectral shape is similar for all collision classes, and the suppression does not saturate in Au þ Au collisions.

DOI

10.1103/PhysRevLett.101.232301

Publication Date

12-3-2008

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