Multiplicity and angular distribution of particles emitted in relativistic nuclear-nuclear interactions

TL;DR

This paper examines how the multiplicity and angular distribution of slow particles emitted in relativistic nuclear interactions vary with projectile mass and collision centrality, highlighting the influence of percolation clusters.

Contribution

It provides experimental insights into particle emission patterns and suggests using heavy ion generators to model the effects of percolation clusters in nuclear interactions.

Findings

Angular distributions change with projectile mass.

Increased secondary interactions with heavier projectiles.

Percolation clusters significantly affect particle multiplicities.

Abstract

We discuss the experimental results on the behavior of the average multiplicities and angular distributions of slow particles emitted in hadron-nuclear and nuclear-nuclear interactions at relativistic energies as a function of the centrality of collisions. It is observed that by increasing the mass of the projectiles the angular distributions of slow particles change and the structure which was demonstrated in the case of pi-mesons, protons and light nuclear projectiles, almost disappears. During the interaction of the heavier projectile with nuclear target, the number of secondary interactions as well as number of nucleon-nucleon elastic scattering and re-scattering events increases. We suggest to restore this information using the heavy ion generators taking into account the multiplicity distributions. Because our investigations show that the formation of the percolation cluster sufficiently influences the behaviour of the average multiplicity of the slow particles emitted in these interactions.