2007/05/22 by PHENIX Collaboration, A. Adare, S. Afanasiev +98 · 3 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-ex
paper · pdf · doi:10.1103/physrevc.77.011901
published as Phys.Rev.C77:011901,2008 · 420 authors from 58 institutions, 6 pages, 4 figures. Submitted to Physical Review Letters. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html
arxiv created 2007/05/22 · openalex publication_date 2008/01/07 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
Azimuthal angle (\ensuremathΔ\ensuremathφ) correlations are presented for charged hadrons from dijets for 0.4<pT<10 GeV/c in Au+Au collisions at √sNN=200 GeV. With increasing pT, 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 \ensuremathΔ\ensuremathφ~\ensuremathπ and an enhanced ``shoulder'' region centered at \ensuremathΔ\ensuremathφ~\ensuremathπ\ifmmode±\else\textpm\fi1.1. The pT 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 pT, which offers constraints on energy transport mechanisms and suggests that it contains the medium response to energetic jets.