In the framework of the clan model, it is shown that the character of growth of normalized factorial moments of the multiplicity distribution in the rapidity interval with decreasing size of the interval depends on the density of the number of clans in the interval, on the distribution of particle numbers in the clans, and on the rapidity distribution of particles inside each clan. The multiplicity distribution of charged particles in the central rapidity intervals in {bar p}p, pp, and K{sup {minus}}p interactions at 32 GeV/c is described using the same model. The dependence of the model parameters on the size of the rapidity interval indicates that the clans are distributed in size in the rapidity space. This is necessary to describe the behavior of factorial moments. 23 refs., 4 figs., 3 tabs.

Intermittency effects have been studied in ppBAR and pp interactions at 32 GeV/c. The factorial moments are given for the rapidity and azimuthal angle distributions for all charged particles and for like-sign ones. A comparison was made with the predictions of the quark-gluon string model and with the data of other experiments.

A method of analysis of multiparticle final states is described. The method is based on the search for the most densely populated regions of multidimensional phase space. Results of separating reaction mechanisms (channels) corresponding to the processes of single diffraction dissociation, of pair production of DELTA+ + DELTA-BAR++ isobars, and of omega-meson production in ppBAR interactions at the momentum 32 GeV/c are presented.

An analysis is made of about 100 000 ppBAR and about 20 000 pp interactions at momentum 32 GeV/c in the Mirabelle liquid-hydrogen bubble chamber. The inclusive correlation function R(k) (G) is constructed; this makes it possible to estimate the effect of multiparticle correlations in production of secondary charged hadrons. On the basis of the study, it has been possible to distinguish two regions of positive multiparticle correlations, both in pBARp and in pp interactions. A conclusion is also drawn regarding the strong influence of the annihilation channel in pBARp interactions on the character of multiparticle correlations. The differences between the pBARp and pp experiments in terms of R(k) (G) are most clearly seen at small values of the filled pseudorapidity intervals G.

Experimental data on exclusive reactions in pp interactions at 32 GeV/c are presented. The characteristics of elastic scattering and diffraction dissociation of protons are studied. The results are compared with those obtained for the pBARp interaction at 32 GeV/c.

The inclusive cross sections for neutral-strange-particle production in {ital pp} interactions are measured at 32 GeV/{ital c}. The total cross section for strange-quark-pair production is reconstructed and found to be {sigma}({ital {bar s}s})=6.0{plus minus}0.3 mb. The distributions in the longitudinal and transverse momentum for {ital K}{sub {ital S}}{sup 0} mesons and {Lambda} hyperons are presented. The main features of strange-hadron production in {ital pp} and {ital {bar p}p} interactions are compared.

We present data on the multiplicities of particles in one-vertex diffraction. We have obtained the coefficient of the inelastic charge exchange of a proton into a neutron. We have determined the cross sections for the reaction channels with {ital l}{pi}{sup 0} mesons ({ital l}=0, 1, 2) and the energy fractions carried away by the particles of the diffractive cluster in the lab system and in the rest frame.

Angular distributions of particles in the proper system of the diffraction cluster have been investigated in the {ital {bar p}p}{r arrow}{ital {bar p}X} reaction at 32 GeV. It is shown that secondary protons, neutrons, and {Lambda} hyperons are sharply collimated in this system in the direction of motion of the primary proton. Mesons are emitted preferentially in the backward direction. The properties of the background (nondiffraction) events in the reaction {ital {bar p}p}{r arrow}{similar to}({Delta}{sup ++}){ital X} are similar to the properties of diffraction events with the same values of the mass of the cluster {ital X}.

Analysis of the distributions of baryons, neutral kaons, and electrical charge density in p-barp interactions at 32 GeV/c has shown the existence of correlations between the regions of fragmentation and of a dependence of the properties of the meson system on the nature of the primary hadrons. The effects observed are determined by the structure of the interaction at the quark level.