Document Type

Article

Publication Date

2009

DOI

10.1103/PhysRevC.79.024906

Publication Title

Physical Review C

Volume

79

Issue

2

Pages

024906 (14 pages)

Abstract

We present measurements of net charge fluctuations in Au+Au collisions at √sNN=19.6, 62.4, 130, and 200 GeV, Cu+Cu collisions at √sNN=62.4 and 200 GeV, and p+p collisions at √s=200GeV using the dynamical net charge fluctuations measure ν+−,dyn. 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 1/Nch scaling but display approximate 1/Npart 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.

Comments

The author or the author's employer may use all or part of the APS published article, including the APS-prepared version (e.g., the PDF from the online journal) without revision or modification, on the author's or employer's website as long as a fee is not charged.

©2009 The American Physical Society

Original Publication Citation

Abelev, B. I., Aggarwal, M. M., Ahammed, Z., Anderson, B. D., Arkhipkin, D., Averichev, G. S., . . . Collaboration, S. (2009). Beam-energy and system-size dependence of dynamical net charge fluctuations. Physical Review C, 79(2), 024906.

ORCID

0000-0002-5680-1814 (Bueltmann)

Download

Share

COinS