Campus Units

Physics and Astronomy

Document Type

Article

Publication Version

Published Version

Publication Date

5-22-2003

Journal or Book Title

Physics Letters B

Volume

561

Issue

1-2

First Page

82

Last Page

92

DOI

10.1016/S0370-2693(03)00423-4

Abstract

PHENIX has measured the centrality dependence of charged hadron p(T) spectra from Au + Au collisions at root(s)NN = 130 GeV The truncated mean p(T) decreases with centrality for p(T) > 2 GeV/c, indicating an apparent reduction of the contribution from hard scattering to high p(T) hadron production. For central collisions the yield at high p(T) is shown to be suppressed compared to binary nucleon-nucleon collision scaling of p + p, data. This suppression is monotonically increasing with centrality, but most of the change occurs below 30% centrality, i.e., for collisions with less than similar to 140 participating nucleons. The observed p(T) and centrality dependence is consistent with the particle production predicted by models including hard scattering and subsequent energy loss of the scattered partons in the dense matter created in the collisions.

Comments

This is a manuscript of an article published as Adcox, K., S. S. Adler, N. N. Ajitanand, Y. Akiba, J. Alexander, L. Aphecetche, Y. Arai et al. "Centrality dependence of the high p T charged hadron suppression in Au+ Au collisions at sNN= 130 GeV." Physics Letters B 561, no. 1 (2003): 82-92. DOI:10.1016/S0370-2693(03)00423-4. Posted with permission.

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

Copyright Owner

Elsevier Science B.V.

Language

en

File Format

application/pdf

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