Experimental Results on Charge Fluctuations in Heavy-Ion Collisions

Figure 3

Centrality dependence of the scaled variance in Au + Au collisions for 0.2 2.0 GeV/ for = 62.4 and 200 GeV [30]. Results from the superposition model are overladed with the shaded regions representing a one-standard deviation range of the prediction for the fluctuation magnitude derived from collision data. Contributions from noncorrelated particle emission with the Poisson distribution of the scaled variance with the addition of elliptic flow in 200 GeV Au + Au collisions are also shown.