Forward-backward emission of target evaporated evaporated fragments at high energy nucleus-nucleus collisions

TL;DR

This study analyzes the emission patterns and statistical properties of target evaporated fragments in high-energy nucleus-nucleus collisions, revealing Gaussian multiplicity distributions and energy-independent fluctuations.

Contribution

It provides a detailed statistical analysis of target evaporated fragments in various high-energy collisions, highlighting Gaussian distributions and energy independence of certain moments.

Findings

Multiplicity distribution fits Gaussian

Second-order moments are energy independent

Scaled variance indicates feeble particle correlation

Abstract

The multiplicity distribution, multiplicity moment, scaled variance, entropy and reduced entropy of target evaporated fragment emitted in forward and backward hemispheres in 12 A GeV $^{4}$He, 3.7 A GeV $^{16}$O, 60 A GeV $^{16}$O, 1.7 A GeV $^{84}$Kr and 10.7 A GeV $^{197}$Au induced emulsion heavy targets (AgBr) interactions are investigated. It is found that the multiplicity distribution of target evaporated fragments emitted in forward and backward hemispheres can be fitted by a Gaussian distribution. The multiplicity moments of target evaporated particles emitted in forward and backward hemispheres increase with the order of the moment {\em q}, and second-order multiplicity moment is energy independent over the entire energy for all the interactions in the forward and backward hemisphere respectively. The scaled variance, a direct measure of multiplicity fluctuations, is close to one for all the interactions which may be said that there is a feeble correlation among the produced particles. The entropy of target evaporated fragments emitted in forward and backward hemispheres are the same within experimental errors, respectively.