Higher Order Bose-Einstein Correlations test the Gaussian Density Matrix Approach

Details Higher Order Bose-Einstein Correlations test the Gaussian Density Matrix Approach Higher Order Bose-Einstein Correlations test the Gaussian Density Matrix Approach

1998-08-31

arxiv.org/abs/hep-ph/9808492v1

Phys.Lett. B438 (1998) 193-202

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages (including one Table) and 2 figures. To appear in Physics Letters B (PLB 13397)

Scientific paper

10.1016/S0370-2693(98)00954-X

A multiparticle system produced by a large number of independent sources is described by a gaussian density matrix W. All theoretical approach to Bose-Einstein Correlatios Cn in high energy physics use this form for W. One of the most salient consequences of this form is the fact that all higher order (n>2) moments of the current distribution can be expressed in terms of the first two. We test this property by comparing the data on C2(Q^2), C3(Q^2) and C4(Q^2) from pion-p and K-p reactions at 250 GeV/c with the predictions of a general quantum statistical space-time approach. Even a simplified version of such approach can account for the data. Previous attempts along these lines, which did not use the space-time approach, met with difficulties.

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