Cumulant versus jet-like three-particle correlations
Abstract
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.
Cite
@article{arxiv.nucl-ex/0609017,
title = {Cumulant versus jet-like three-particle correlations},
author = {Jason G. Ulery and Fuqiang Wang},
journal= {arXiv preprint arXiv:nucl-ex/0609017},
year = {2009}
}
Comments
13 pages, 8 figures. published version