Article
Transverse momentum and centrality dependence of dihadron correlations in Au plus Au collisions at root s(NN)=200 GeV: Jet quenching and the response of partonic matter
Physical Review C
Document Type
Article
Publication Version
Published Version
Publication Date
1-1-2008
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.
Copyright Owner
American Physical Society
Copyright Date
2008
Language
en
File Format
application/pdf
Citation Information
Andrew Adare, Sergey Belikov, Paul Constantin, Nathan C. Grau, et al.. "Transverse momentum and centrality dependence of dihadron correlations in Au plus Au collisions at root s(NN)=200 GeV: Jet quenching and the response of partonic matter" Physical Review C Vol. 77 Iss. 1 (2008) p. 011901 Available at: http://works.bepress.com/craig-ogilvie/129/
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.