Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2006-09-12
Phys.Rev.C79:024904,2009
Physics
Nuclear Physics
Nuclear Experiment
13 pages, 8 figures. published version
Scientific paper
10.1103/PhysRevC.79.024904
Two-particle jet-like azimuthal correlations have revealed intriguing modifications to the away-side of high pt trigger particles in relativistic heavy-ion collisions. Three-particle jet-like azimuthal correlation and three-particle azimuthal cumulant have been analyzed in experiments in attempt to distinguish conical emission of jet-correlated particles from other physics mechanisms. We investigate the difference between three-particle jet-like correlation and three-particle cumulant in azimuth. We show, under the circumstance where the away-side two-particle correlation is relatively flat in azimuth and similar in magnitude to the azimuthal average of the two-particle correlation signal, that the three-particle cumulant cannot distinguish conical emission from other physics mechanisms. The three-particle jet-like correlation, on the other hand, retains its discrimination power.
Ulery Jason G.
Wang Fuqiang
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