53 research outputs found
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Proton - Nucleus Interactions at 200-GeV/c
The investigation of interactions of hadrons with the nucleus in recent time became very important, and there is a hope that it can give the information about the systems produced in this process (lifetime, cross sections etc.) The nuclear photoemulsions are a good detector at the investigation of hadron-nucleus interactions due to a high spatial resolution and a possibility of detection of particles nearly at all energies that enables to study the characteristics of both fast and slow particles. The consistence of emulsion enables to obtain the characteristics of interactions both on light (CNO, <A> = 14) and on heavy(Ag,Br,<A> = 94) nuclei
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Multiplicity of Charged Particles in Pion - Nucleus Interactions in an Emulsion at 200-GeV/c
The experimental data on multiplicities of charged secondaries produced in pion-nucleus interactions in an emulsion at 200 Gev/c and correlations bet6ween them are presented and discussed. Parameters of multiplicity distributions are compared with the relevant ones at lower energies and with data from pA-interactions at 200 Gev/c. The multiplicity of heavily ionizing particles in {Pi}{sup -}A-interactions weakly depend on the incident energy. The KNO scaling is observed being the same for incident protons and pions
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A Study of Two Particle Correlations in Inelastic Pion - Nucleus Interactions at 200-GeV/c
Pseudorapidity and azimuthal two-particle correlations have been investigated in pion-nucleus interactions at 200 Gev/c. The considerable attention has been devoted to the exclusion of kinematical and pseudo-correlations. The qualitative comparison of experimental results with some theoretical models has been performed
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An Analysis of Angular Distributions of Relativistic Particles in Inelastic Pion - Nucleus Collisions at 200-GeV/c
General parameters characterizing single particle inclusive distributions of shower particles and their dependence on the multiplicity are discussed in {Pi} interactions at 200 Gev. The qualitative comparison of data presented with predictions of several popular models for hadron nucleus collisions are performed
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INTERACTIONS OF 200-GeV/c PROTONS WITH EMULSION NUCLEI, CHARGED PARTICLE MULTIPLICITIES
The experimental data on the multiplicity distributions for various kinds of secondaries produced in the proton-nucleus interactions in emulsion at 200 GeV/c and the correlations between them are presented and discussed. All the characteristics of heavy prongs (mean values <n{sub b}>, <n{sub g}>, <N{sub h}>, their distributions and correlations) are independent (or have a very weak dependence) on the collisions energy in the range 20-200 GeV/c. The data contradict to the cascade-evaporation model and qualitatively agree with the mechanism of particle emission via the long-lived intermediate states. The observed weak A-dependence ({approx} A{sup 0.15}) of shower particle distributions is in agreement with the calculated ones according to the simplified two-step model. It is shown that the n{sub s}-distributions agree well with KNO scaling law in the 67-200 GeV/c range, but the form of universal {psi}(n{sub s/n{sub s}})-function has a weak A-dependence
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