Erraticity behaviour in relativistic nucleus-nucleus collisions

Event-by-event fluctuations in factorial moments in terms of erraticity measures are examined by analysing the experimental data on 4.5 A and 14.5 A GeV/c Si-28-nucleus interactions. The findings are compared with the predictions of the Lund Monte Carlo model, FRITIOE It is observed that the magnitudes of erraticity moments decrease with increasing multiplicity and are essentially insensitive to the incident energy and mass of the beam/target nuclei. Furthermore, analysis of the correlation free Monte Carlo events clearly indicates that the erratic fluctuations arise mostly due to statistical reasons, particularly in the case of low multiplicity events.