Abstract
It is shown that in central collisions of $^{197}$Au nuclei with heavy emulsion nuclei at 11.6 $A$GeV/c two-particles pseudorapidity correlations for produced particles in terms of correlation functions demonstate predominantly long-range behaviour in contrast to nucleon-nucleon interactions. The experimental data are compared with calculations based on the FRITIOF-M model and the model of independent emission of particles.
Highlights
Interest to the study of relativistic nucleus-nucleus collisions is caused by many reasons, such as the possibility to study the nuclear fragmentation processes or the processes of propagation of newly born particles (“in statu nascendi”) through the nuclear medium
It can be assumed that the collective properties of an ensemble of produced particles may demonstrate themselves in two-particle and multiparticle correlations
We see that the experimental ns-distribution is very broad and it can not be reproduced by the FRITIOF-M model [13]
Summary
Interest to the study of relativistic nucleus-nucleus collisions is caused by many reasons, such as the possibility to study the nuclear fragmentation processes or the processes of propagation of newly born particles (“in statu nascendi”) through the nuclear medium. Particular attention is paid to issues related to the collective properties of the particles produced. Since the energy density can reach high values, the question arises on the possibility of an ensemble of produced particles to manifest some collective behaviour (the quark-gluon plasma is the primary goal here), especially in light of the fact that in such collisions the bounce-off effects are clearly observed [1]. It can be assumed that the collective properties of an ensemble of produced particles may demonstrate themselves in two-particle and multiparticle correlations. This paper presents experimental data on two-particle correlations among pseudorapidities of relativistic particles produced in central interactions of 197Au nuclei with emulsion nuclei at 11.6 AGeV/c
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