Abstract
We present measurements of net charge fluctuations in Au + Au collisions at \(\sqrt {s_{NN} } \) = 19.6, 62.4, 130, and 200 GeV, Cu + Cu collisions at \(\sqrt {s_{NN} } \) = 62.4, 200 GeV, and p + p collisions at \(\sqrt s \) = 200 GeV using the net charge dynamical fluctuations measure ν+ −,dyn. The dynamical fluctuations are non-zero at all energies and exhibit a rather modest dependence on beam energy. We find that at a given energy and collision system, net charge dynamical fluctuations violate 1/N ch scaling, but display approximate 1/N part scaling. We observe strong dependence of dynamical fluctuations on the azimuthal angular range and pseudorapidity widths.
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Sharma, M. Beam-energy and system-size dependence of dynamical net charge fluctuations. Indian J Phys 85, 855–860 (2011). https://doi.org/10.1007/s12648-011-0089-4
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DOI: https://doi.org/10.1007/s12648-011-0089-4