# System Size and Energy Dependence of Jet-Induced Hadron Pair Correlation Shapes in Cu+Cu and Au+Au Collisions at $\sqrt{s_{NN}}$ = 200 and 62.4 GeV

Abstract : 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.
Document type :
Journal articles

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Submitted on : Tuesday, November 28, 2006 - 3:57:39 PM
Last modification on : Tuesday, April 20, 2021 - 12:00:07 PM

### Citation

A. Adare, S.S. Adler, S. Afanasiev, C. Aidala, N.N. Ajitanand, et al.. System Size and Energy Dependence of Jet-Induced Hadron Pair Correlation Shapes in Cu+Cu and Au+Au Collisions at $\sqrt{s_{NN}}$ = 200 and 62.4 GeV. Physical Review Letters, American Physical Society, 2007, 98, pp.232302. ⟨10.1103/PhysRevLett.98.232302⟩. ⟨in2p3-00116893⟩

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