Evolution of the statistical disintegration of finite nuclei toward high energy

TL;DR

This paper presents a statistical model for the formation of complex nuclei from baryons in high-energy heavy-ion collisions, demonstrating local equilibrium and matching experimental data.

Contribution

It introduces a novel statistical approach to describe nuclei formation from excited nuclear systems in high-energy collisions, supported by experimental validation.

Findings

Successful reproduction of FOPI data

Evidence of local equilibrium in nuclear matter

Regularities in nuclei production mechanism

Abstract

We develop a statistical approach for the description of complex nuclei formation from dynamically produced baryons in high energy heavy-ion reactions. We consider a finite highly-excited expanding nuclear system formed after central nucleus-nucleus collisions. This system is sub-divided into primary equilibrated nucleon clusters. The final nuclei are produced after the decay of these excited clusters. By the successful comparison with the FOPI experimental data we prove the possibility of such a local equilibrium in nuclear matter with the temperature corresponding to the phase coexistence region. The regularities obtained in this new nuclei production mechanism are shown.