Event by Event Analysis of High Multiplicity Events Produced in 158 A GeV/c 208 Pb- 208 Pb Collisions

TL;DR

This paper analyzes high multiplicity events in lead-lead collisions at 158 A GeV/c, identifying anomalous spikes and fluctuations, and compares experimental data with Monte Carlo simulations to explore clustering and jet phenomena.

Contribution

It introduces a method to select and analyze events with dense particle spikes and compares their fluctuations with Monte Carlo models, revealing insights into dynamical behaviors.

Findings

Identification of events with large density spikes

Evidence of clustering or jet-like phenomena

Comparison with Monte Carlo simulations supports dynamical fluctuation analysis

Abstract

An extensive analysis of individual high multiplicity events produced in 158 A GeV /c 208Pb- 208Pb collisions is carried by adopting different methods to examine the anomalous behavior of these rare events. A method of selecting the events with densely populated narrow regions or spikes out of a given sample of collision events is discussed.Employing this approach two events with large spikes in their eta- and phi- distributions are selected for further analysis. For the sake of comparison, another two events which do not exhibit such spikes are simultaneously analyzed. The findings suggest that the systematic studies of particle density fluctuations in one- and two-dimensional phase-spaces and comparison with those obtained from the studies of correlation free Monte Carlo events, would be useful for identifying the events with large dynamical fluctuations. Formation of clusters or jet like phenomena in multihadronic final states in individual events is also discussed and the experimental findings are compared with the independent particle emission hypothesis by carrying out Monte Carlo simulations.