Beam Energy and System Size Dependence of Dynamical Net Charge Fluctuations [electronic resource].
- Published:
- Berkeley, Calif. : Lawrence Berkeley National Laboratory. Nuclear Science Division, 2008.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Additional Creators:
- Lawrence Berkeley National Laboratory, Lawrence Berkeley National Laboratory. Nuclear Science Division, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Summary:
- We present measurements of net charge fluctuations in Au + Au collisions at √s{sub NN} = 19.6, 62.4, 130, and 200 GeV, Cu + Cu collisions at √s{sub NN} = 62.4, 200 GeV, and p + p collisions at √s = 200 GeV using the dynamical net charge fluctuations measure ν{sub ±,dyn}. We observe that the dynamical fluctuations are non-zero 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{sub ch} scaling, but display approximate 1/N{sub 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.
- Report Numbers:
- E 1.99:lbnl-2107e
lbnl-2107e - Other Subject(s):
- Note:
- Published through SciTech Connect.
07/21/2008.
"lbnl-2107e"
Physical Review Letters ISSN 0031-9007; PRLTAO FT
STAR Coll. - Funding Information:
- DE-AC02-05CH11231
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