Abstract
We report the first three-particle coincidence measurement in pseudorapidity (delta eta) between a high transverse momentum (p⊥) trigger particle and two lower p⊥ associated particles within azimuth |deltaphi|<0.7 in [sqrt]sNN=200 GeV d+Au and Au+Au collisions. Charge ordering properties are exploited to separate the jetlike component and the ridge (long range delta eta correlation). The results indicate that the correlation of ridge particles are uniform not only with respect to the trigger particle but also between themselves event by event in our measured delta eta. In addition, the production of the ridge appears to be uncorrelated to the presence of the narrow jetlike component.
Publisher
American Physical Society
Citation
STAR Collaboration et al. “Three-Particle Coincidence of the Long Range Pseudorapidity Correlation in High Energy Nucleus-Nucleus Collisions.” Physical Review Letters 105.2 (2010): 022301. © 2010 The American Physical Society.
Version: Final published version