Abstract
We present measurements of net charge fluctuations in collisions at , , , and GeV, collisions at and GeV, and collisions at GeV using the dynamical net charge fluctuations measure . We observe that the dynamical fluctuations are nonzero at all energies and exhibit a modest dependence on beam energy. A weak system size dependence is also observed. We examine the collision centrality dependence of the net charge fluctuations and find that dynamical net charge fluctuations violate scaling but display approximate scaling. We also study the azimuthal and rapidity dependence of the net charge correlation strength and observe strong dependence on the azimuthal angular range and pseudorapidity widths integrated to measure the correlation.
- Received 21 July 2008
DOI:https://doi.org/10.1103/PhysRevC.79.024906
©2009 American Physical Society