Campus Units

Physics and Astronomy

Document Type

Article

Publication Version

Published Version

Publication Date

5-2006

Journal or Book Title

Physical Review Letters

Volume

96

Issue

20

First Page

202301

DOI

10.1103/PhysRevLett.96.202301

Abstract

Inclusive transverse momentum spectra of eta mesons have been measured within p(T)=2-10 GeV/c at midrapidity by the PHENIX experiment in Au+Au collisions at root s(NN) = 200 GeV. In central Au+Au the eta yields are significantly suppressed compared to peripheral Au+Au, d+Au, and p+p yields scaled by the corresponding number of nucleon-nucleon collisions. The magnitude, centrality, and p(T) dependence of the suppression is common, within errors, for eta and pi(0). The ratio of eta to pi(0) spectra at high p(T) amounts to 0.40 < R-eta/pi(0)< 0.48 for the three systems, in agreement with the world average measured in hadronic and nuclear reactions and, at large scaled momentum, in e(+)e(-) collisions.

Comments

This article is published as Adler, Stephen Scott, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas et al. "Common Suppression Pattern of η and π 0 Mesons at High Transverse Momentum in Au+ Au Collisions at s N N= 200 GeV." Physical review letters 96, no. 20 (2006): 202301. DOI:10.1103/PhysRevLett.96.202301. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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