Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2006-11-12
Phys.Rev.Lett.98:232302,2007
Physics
Nuclear Physics
Nuclear Experiment
464 authors from 60 institutions, 6 pages, 3 figures, 2 tables. Submitted to Physical Review Letters. Plain text data tables f
Scientific paper
10.1103/PhysRevLett.98.232302
We present azimuthal angle correlations of intermediate transverse momentum (1-4 GeV/c) hadrons from {dijets} in Cu+Cu and Au+Au collisions at sqrt(s_NN) = 62.4 and 200 GeV. The away-side dijet induced azimuthal correlation is broadened, non-Gaussian, and peaked away from \Delta\phi=\pi in central and semi-central collisions in all the systems. The broadening and peak location are found to depend upon the number of participants in the collision, but not on the collision energy or beam nuclei. These results are consistent with sound or shock wave models, but pose challenges to Cherenkov gluon radiation models.
Adare Andrew
PHENIX Collaboration
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