Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2012-01-01
2011 J. Phys. G: Nucl. Part. Phys. 38 124188
Physics
Nuclear Physics
Nuclear Experiment
Proceedings of the 22nd International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (Annecy, France, 23-28 May
Scientific paper
10.1088/0954-3899/38/12/124188
STAR has recently reported charge-dependent azimuthal correlations that are sensitive to the charge separation effect in Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 200 GeV. Qualitatively, these results agree with some of the theoretical predictions for local parity violation in heavy-ion collisions. However, a study using reaction-plane-dependent balance functions shows an alternative origin of this signal. The balance function, which measures the correlation between oppositely charged pairs, is sensitive to the mechanisms of charge formation and the subsequent relative diffusion of the balancing charges. The reaction-plane-dependent balance function measurements can be related to STAR's charge-dependent azimuthal correlations. We report reaction-plane-dependent balance functions for Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 200, 62.4, 39, 11.5, and 7.7 GeV using the STAR detector. The model of Schlichting and Pratt incorporating local charge conservation and elliptic flow reproduces most of the three-particle azimuthal correlation results at 200 GeV. The experimental charge-dependent azimuthal charge correlations observed at 200 GeV can be explained in terms of local charge conservation and elliptic flow.
for the STAR Collaboration
Wang Hui
No associations
LandOfFree
Study of charge-dependent azimuthal correlations using reaction-plane-dependent balance functions 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 Study of charge-dependent azimuthal correlations using reaction-plane-dependent balance functions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Study of charge-dependent azimuthal correlations using reaction-plane-dependent balance functions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-55133