Charged particle fluctuations and microscopic models of nuclear collisions

Q. H. Zhang, V. Topor Pop, S. Jeon, C. Gale

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


We study the event-by-event fluctuations of the charged particles and compare the results of different Monte Carlo generators (MCG): VNIb, HIJING, HIJING/BB̄, and RQMD. We find that the D-measure can be used to distinguish between the different gluon populations that are present in the MCG models. On the other hand, the value of the D-measure shows high sensitivity to the rescattering effects in VNIb model, but lower sensitivity to the rescattering effects in RQMD model. We also find that the D-measures from AA are consistent with the D-measures from pp for all generators except VNIb. Therefore, any deviation among the values of D-measure for different impact parameters and between pp and AA collisions may indicate that either the rescattering effects play a key role in the interactions or there is new physics in AA collisions.

Original languageEnglish (US)
Article number014909
Pages (from-to)149091-149098
Number of pages8
JournalPhysical Review C - Nuclear Physics
Issue number1
StatePublished - Jul 1 2002
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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