Campus Units

Physics and Astronomy

Document Type

Article

Publication Version

Published Version

Publication Date

1-2008

Journal or Book Title

Physical Review C

Volume

77

Issue

1

First Page

011901

DOI

10.1103/PhysRevC.77.011901

Abstract

Azimuthal angle (Delta phi) correlations are presented for charged hadrons from dijets for 0.4 < p(T)< 10 GeV/c in Au+Au collisions at root s(NN)=200 GeV. With increasing p(T), the away-side distribution evolves from a broad and relatively flat shape to a concave shape, then to a convex shape. Comparisons to p+p data suggest that the away-side can be divided into a partially suppressed "head" region centered at Delta phi similar to pi and an enhanced "shoulder" region centered at Delta phi similar to pi +/- 1.1. The p(T) spectrum for the head region softens toward central collisions, consistent with the onset of jet quenching. The spectral slope for the shoulder region is independent of centrality and trigger p(T), which offers constraints on energy transport mechanisms and suggests that it contains the medium response to energetic jets.

Comments

This article is published as Adare, A., S. Afanasiev, C. Aidala, N. N. Ajitanand, Yasuyuki Akiba, H. Al-Bataineh, J. Alexander et al. "Transverse momentum and centrality dependence of dihadron correlations in Au+ Au collisions at s NN= 200 GeV: Jet quenching and the response of partonic matter." Physical Review C 77, no. 1 (2008): 011901. DOI:10.1103/PhysRevC.77.011901. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

Included in

Nuclear Commons

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