Study of nuclear density effects on secondary hadrons many-particle correlations

The data obtained by the bubble chambers and nuclear photoemulsion in the interval of energies from 4 up to 400 GeV have been analysed in the quasirapidity scale with the purpose of secondary hadron clusterisation study. The new method of the multiparticle correlations, independing on the energy, quasirapidity interval chosen and models, has been proposed in this work. It is shown that the density correlations of different signs in the analysed events are observed. Among them the events with maximal densities, in which the correlation factor does not differ from background beyond a double statistical error, are not observed. Howeverthere are bumps at 400 GeV, the values of which require an affirmation. (orig.)