Forward-backward rapidity correlations in a two-step scenario

Details Forward-backward rapidity correlations in a two-step scenario Forward-backward rapidity correlations in a two-step scenario

2006-11-27

arxiv.org/abs/hep-ph/0611329v2

Phys.Lett.B653:202-205,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 3 eps figures

Scientific paper

10.1016/j.physletb.2007.01.076

We argue that two-step models, like String and Glasma models, with creation first of sources extended in rapidity that after locally decay into particles, lead to long range forward-backward correlations due to fluctuations in the number or the colour of the sources, and to a similar expression for the {\it F-B} correlation parameter $b$. In the simplest String percolation scenario, $b$ increases with centrality or the number of participating nucleons. However, asymptotically it decreases with energy. This is different from the Glasma model where $b$ increases with both, centrality and energy.

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