On the forward-backward correlations in a two-stage scenario

Details On the forward-backward correlations in a two-stage scenario On the forward-backward correlations in a two-stage scenario

2000-07-21

arxiv.org/abs/hep-ph/0007241v1

Phys.Lett. B493 (2000) 54-64

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages in LaTex, 1 figure in Postscript

Scientific paper

10.1016/S0370-2693(00)01127-8

It is demonstrated that in a two-stage scenario with elementary Poissonian emitters of particles (colour strings) arbitrarily distributed in their number and average multiplicities, the forward- backward correlations are completely determined by the final distribution of the forward particles. The observed linear form of the correlations then necessarily requires this distribution to have a negative binomial form. For emitters with a negative binomial distribution of the produced particles distributed so as to give the final distribution also of a negative binomial form, the forward-backward correlations have an essentially non-linear form, which disagrees with the experimental data.

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