Paper detail

Long-range and short-range multiparticle correlation in collisions of $_{79}Au^{197}$ 10.7 A GeV with photoemulsion nuclei

A search and research of long-range and short-range multiparticle correlations in pseudorapidity distribution of secondary particles on the base of analysis of individual interaction of nuclei of $^{197}Au$ at energy 10.7 AGeV with photoemulsion nuclei, is carried out. Events with long-range multiparticle correlations (LC), short-range multiparticle correlations (SC) and mixed type (MT) in pseudorapidity distribution of secondary particles, are selected by Hurst method in accordance of Hurst curve behavior. These types have significantly different characteristics. At first, they have different parameters of fragmentation. Events of LC type are processes of full destruction of projectile nucleus, in which multicharge fragments are absent. In events of mixed type several multicharge fragments of projectile nucleus are discovered. Secondly, these two types have significantly different multiplicity distribution. Mean multiplicity of LC type events is significantly more than in events of mixed type. On the basis of research of dependence of multiplicity versus target-nuclei fragments number for events of various types it is revealed, that the most considerable multiparticle correlations are observed in interactions of mixed type, which correspond to the central collisions of gold nuclei and nuclei of CNO-group, i.e. nuclei with strongly asymmetric volume, nuclear mass, charge, etc. Such events are characterised by full destruction of target-nucleus and disintegration of projectile-nucleus on several multi-charged fragments.