Correlations in large psub(T) processes in parton models

We calculate the two-particle distribution and the associated multiplicity for large psub(T) region in the framework of the parton models. We find that it is possible to construct a model beeing able to fit quite well a large amount of data on the two-particle level. The model should possess the following properties: the hard scattering cross-section should be independent of energy at fixed psub(T), both quasi-exclusive (single-jet) and inclusive (double-jet) components must be present with the cross-section for the double-jet process at least one order of magnitude larger than that for the single-jet process, the mean transverse momentum in the jet fragmentation should be of the order of 630 MeV, the jet structure function should be damped like (1 - x)2 for x → 1. (author)