Campus Units

Physics and Astronomy

Document Type

Article

Publication Version

Published Version

Publication Date

8-2003

Journal or Book Title

Physical Review Letters

Volume

91

Issue

7

First Page

072301

DOI

10.1103/PhysRevLett.91.072301

Abstract

Transverse momentum spectra of neutral pions in the range 1 < p(T) < 10 GeV/c have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au+Au collisions at roots(NN)=200 GeV. The pi(0) multiplicity in central reactions is significantly below the yields measured at the same roots(NN) in peripheral Au+Au and p+p reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the suppression factor is similar to 2.5 at p(T)=2 GeV/c and increases to similar to 4-5 at p(T) approximate to 4 GeV/c. At larger p(T), the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.

Comments

This article is published as Adler, Stephen Scott, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas et al. "Suppressed π0 Production at Large Transverse Momentum in Central Au+ Au Collisions at sNN = 200 GeV." Physical Review Letters 91, no. 7 (2003): 072301. DOI:10.1103/PhysRevLett.91.072301. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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