System Size and Energy Dependence of Jet-Induced Hadron Pair Correlation Shapes in Cu+Cu and Au+Au Collisions at {radical}(s{sub NN})=200 and 62.4 GeV

Journal Article · Fri Jun 08 00:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.98.232302· OSTI ID:20951463

Adare, A; Bickley, A A; Ellinghaus, F; Kinney, E; Seele, J; Wysocki, M ^[1]; Adler, S S; Aronson, S H; Azmoun, B; David, G; Desmond, E J; Franz, A; Haggerty, J S; Harvey, M; Johnson, B M; Kistenev, E; Kroon, P J; Lynch, D; Makdisi, Y I; Mioduszewski, S ^[2]

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1. University of Colorado, Boulder, Colorado 80309 (United States)
2. Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)

We present azimuthal angle correlations of intermediate transverse momentum (1-4 GeV/c) hadrons from dijets in Cu+Cu and Au+Au collisions at {radical}(s{sub 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 semicentral 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.

• OSTI ID: 20951463
• Journal Information: Physical Review Letters, Vol. 98, Issue 23; Other Information: DOI: 10.1103/PhysRevLett.98.232302; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COLLIDING BEAMS
COPPER 63 BEAMS
COPPER 63 REACTIONS
COPPER 63 TARGET
ENERGY DEPENDENCE
GEV RANGE 10-100
GEV RANGE 100-1000
GLUONS
GOLD 197 BEAMS
GOLD 197 REACTIONS
GOLD 197 TARGET
HADRONS
MATHEMATICAL MODELS
SHOCK WAVES
SOUND WAVES
TRANSVERSE MOMENTUM