Beam-energy and system-size dependence of dynamical net charge fluctuations
Name
Abelev-2009-Beam-energy and syst.pdf
Size
419.66 KB
Format
Adobe PDF
Checksum (MD5)
ceebd48c2f0c984b3e55cb9cf50ae6ee
Author(s)
Sakuma, Tai
Miller, M. L.
Millane, Julie M.
Kocoloski, Adam Philip
Jones, Christopher LaDon
Balewski, Jan T.
Surrow, Bernd
Hoffman, Alan Michael
Date Issued
February 2009
Journal
Physical Review C
Publisher
American Physical Society
Citation
STAR Collaboration et al. “Beam-energy and system-size dependence of dynamical net charge fluctuations.” Physical Review C 79.2 (2009): 024906. © 2009 The American Physical Society
Version
Final published version
Abstract
We present measurements of net charge fluctuations in Au+Au collisions at √[subscript s[superscript [NN]]=19.6, 62.4, 130, and 200 GeV, Cu+Cu collisions at √[subscript s[superscript [NN]]=62.4 and 200 GeV, and p+p collisions at √s=200 GeV using the dynamical net charge fluctuations measure ν[subscript +-,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/N[subscript ch] scaling but display approximate 1/N[subscript part] 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.
MIT Department
Lincoln Laboratory
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
http://dx.doi.org/10.1103/PhysRevC.79.024906
