Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2007-11-07
PoS CPOD07:019,2007
Physics
Nuclear Physics
Nuclear Experiment
Critical Point and Onset of Deconfinement, 4th International Workshop, July 9-13, 2007, GSI, Darmstadt, Germany
Scientific paper
A discussion of results for short and long-range multiplicity correlations (forward-backward) are presented for several systems (Au+Au, Cu+Cu, and pp) and energies (e.g. $\sqrt{s_{NN}}$ = 200, 62.4, and $\approx$ 20 GeV). These correlations are measured with increasing values of a gap in pseudorapidity, from no gap at midrapidity to a separation of 1.6 units ($|\eta|$ = 0.8). For the highest energy, central A+A collisions, the forward-backward correlation strength maintains a constant value across the measurement region. In peripheral collisions, at lower energies, and in pp data, the maximum appears at midrapidity. This result may indicate the possible formation of high density matter for central A+A collisions at $\sqrt{s_{NN}}$ = 200 GeV.
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