Long-range rapidity correlations in high energy AA collisions in Monte Carlo model with string fusion

Abstract

The magnitude of long-range correlations between observables in two separated rapidity windows, proposed as a signature of the string fusion and percolation phenomenon, is studied in the framework of non-Glauber Monte Carlo string-parton model, based on the picture of elementary collisions of color dipoles. The predictions, obtained with and without string fusion, demonstrate effects of color string fusion on the observables in Pb-Pb collisions at the LHC: decrease of n-n correlation coefficient with centrality and negative pt-n correlations, if the sufficiently effective centrality estimator is applied. In general case it is shown that the values of n-n and pt-n correlation coefficients strongly depend on the method of collision centrality fixation. In contrast, the predictions obtained for pt-pt correlation have almost no effect of centrality determination method and the corresponding experimental data would produce the strong limitation on the transverse radius of a string.

5 pages, 4 figures, to be published in EPJ Web of Conferences (INPC2013 proceedings)

References in corpus (3)

• Elastic and quasi-elastic $pp$ and ${\gamma }^{\star }p$ scattering in the Dipole Model
• Modelling of exclusive parton distributions and long-range rapidity correlations for pp collisions at the LHC energy
• Model of pp and AA collisions for the description of long-range correlations

Cited by in corpus (4)

• Strongly intensive observable between multiplicities in two acceptance windows in a string model
• Mean transverse momenta correlations in hadron-hadron collisions in MC toy model with repulsing strings
• Forward-backward correlations between intensive observables
• Strangeness production and long-range correlations in pp collisions in string fusion approach