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Advances in High Energy Physics
Volume 2015, Article ID 615458, 8 pages
Research Article

Search for Long-Range Correlations in Relativistic Heavy-Ion Collisions at SPS Energies

1Department of Physics, Aligarh Muslim University, Aligarh 202002, India
2Department of Applied Physics, Aligarh Muslim University, Aligarh 202002, India

Received 22 July 2014; Accepted 12 September 2014

Academic Editor: Venktesh Singh

Copyright © 2015 Shakeel Ahmad et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3.


Long-range correlations are searched for by analysing the experimental data on 16O-AgBr and 32S-AgBr collisions at 200 A GeV/c and the results are compared with the predictions of a multi phase transport (AMPT) model. The findings reveal that the observed forward-backward (F-B) multiplicity correlations are mainly of short range in nature. The range of F-B correlations are observed to extend with increasing projectile mass. The observed extended range of F-B correlations might be due to overall multiplicity fluctuations arising because of nuclear geometry. The findings are not sufficient for making any definite conclusions regarding the presence of long-range correlations.