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System Size and Energy Dependence of Jet-Induced Hadron Pair Correlation Shapes inCu+CuandAu+AuCollisions atsNN=200and 62.4 GeV
- Source :
- Physical Review Letters. 98
- Publication Year :
- 2007
- Publisher :
- American Physical Society (APS), 2007.
-
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 root 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 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.
- Subjects :
- Shock wave
Physics
010308 nuclear & particles physics
Hadron
General Physics and Astronomy
Jet (particle physics)
Radiation
01 natural sciences
Gluon
Azimuth
Nuclear physics
0103 physical sciences
High Energy Physics::Experiment
Atomic physics
Nuclear Experiment
010306 general physics
Cherenkov radiation
Beam (structure)
Subjects
Details
- ISSN :
- 10797114 and 00319007
- Volume :
- 98
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters
- Accession number :
- edsair.doi...........239ff42725107d8e391b44a890e5fa98