Abstract
We demonstrate that the investigations of the forward-backward correlations between intensive observables enable to obtain more clear signal about the initial stage of hadronic interaction, e.g. about the process of string fusion, compared to usual forward-backward multiplicity correlations. As an example, the correlation between mean-event transverse momenta of charged particles in separated rapidity intervals is considered. We performed calculations in the framework of dipole-based Monte Carlo string fusion model. We obtained the dependence of the correlation strength on the collision centrality for different initial energies and colliding systems. It is shown that the dependence reveals the decline of the correlation coefficient for most central Pb-Pb collisions at LHC energy. We compare the results both with the ones obtained in alternative models and with the ones obtained by us using various MC generators.
Highlights
The long-range correlations are studied in terms of correlation functions and correlation coefficients
The results show a general growth of bpt-pt with centrality reflecting the increase of string density and, the role of string fusion from peripheral to central collisions
The comparison clearly shows that pt-pt forward-backward correlation and its centrality dependence is sensitive to the initial stages of heavy ion collisions
Summary
This content has been downloaded from IOPscience. Ser. 798 012053 (http://iopscience.iop.org/1742-6596/798/1/012053) View the table of contents for this issue, or go to the journal homepage for more. You may be interested in: Forward-backward correlations in proton-proton collisions E. L. Gillies Recent results of fluctuation and correlation studies from the STAR experiment Terence J Tarnowsky Hidden Markov Model and Forward-Backward Algorithm in Crude Oil Price Forecasting Abdul Talib Bon and Nuhu Isah Forward-Backward Synchronization in Solid-State Superfluorescence R. Kree et al Multiparticle production in Kp and p soft collisions in the DTU model Chi-jiang Chen and Jing-fa Lu The robustness of fully coupled forward-backward stochastic differential equations X-Y Lin, Q-X Sun and X-R Wang
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