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Advances in High Energy Physics
Volume 2018, Article ID 6914627, 11 pages
Research Article

Correlations and Event-by-Event Fluctuations in High Multiplicity Events Produced in 208Pb-208Pb Collisions

1Department of Physics, Aligarh Muslim University, Aligarh 202002, India
2Department of Physics and Electronics, Dr. Ram Manohar Lohia Avadh University, Faizabad 224001, India
3Department of Physics, Banaras Hindu University, Varanasi 221005, India
4Department of Applied Physics, Aligarh Muslim University, Aligarh 202002, India

Correspondence should be addressed to Shakeel Ahmad; hc.nrec@damha.leekahs

Received 27 October 2017; Accepted 7 March 2018; Published 8 April 2018

Academic Editor: Andrea Coccaro

Copyright © 2018 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.


Analysis of high multiplicity events produced in 158A GeV/c Pb-Pb collisions is carried out to study the event-by-event fluctuations. The findings reveal that the method of scaled factorial moments can be used to identify the events having densely populated narrow phase space bins. A few events sorted out by adopting this approach are individually analyzed. It is observed that these events do exhibit large fluctuations in their pseudorapidity, , and azimuthal angle, , distributions arising due to some dynamical reasons. Two-particle - correlation study applied to these events too indicates that some complex two-dimensional structure of significantly high magnitude is present in these events which might have some dynamical origin. The findings reveal that the method of scaled factorial moments may be used as an effective triggering for events with large dynamical fluctuations.