Аннотация
A thermodynamical model based on the modern ideas on hadron structure is formulated for the process of production of particles with large transverse momenta. We have also allowed for the factors important for describing the cluster-system decay which are caused by fluctuation, possible state non-equilibrium, and the causality principle. The model is used to analyse qualitatively different observed characteristics of the process. A satisfactory agreement of the model with experiment reveals the cause of difficulties of the recent picture of quark hard collisions.