Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2009-07-27
Nucl.Phys.A830:681c-684c,2009
Physics
Nuclear Physics
Nuclear Experiment
4 pages, 4 Figures, Quark Matter 2009
Scientific paper
10.1016/j.nuclphysa.2009.10.062
We present new results on 2-particle azimuthal ($\Delta\phi$) correlation relative to event plane and 3-particle pseudorapidity ($\Delta\eta$) correlation at mid-rapidity in Au+Au collisions at $\sqrt{{\it s}_{NN}}$ = 200 GeV, measured by the STAR experiment. While jet-like correlation is symmetric, ridge is found to be asymmetric when trigger particle azimuth is between in- and out-of-plane. The charge ordering properties between associated and trigger particles are exploited to separate jet-like and ridge contributions in 3-particle $\Delta\eta$-$\Delta\eta$ correlations. We found that like-sign triplets are dominated by ridge. The separated ridge, while narrow in $\Delta\phi$, is extremely broad in $\Delta\eta$. The ridge particles are not only uncorrelated to the trigger particle in $\Delta\eta$, but also uncorrelated between themselves.
for the STAR Collaboration
Netrakanti Pawan Kumar
No associations
LandOfFree
Addressing the physics of the ridge by 2- and 3-particle correlations at STAR does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Addressing the physics of the ridge by 2- and 3-particle correlations at STAR, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Addressing the physics of the ridge by 2- and 3-particle correlations at STAR will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-246750