TY  - INPR
A1  - Belkacem, Mohamed
A1  - Aouissat, Zoheir
A1  - Bleicher, Marcus
A1  - Stöcker, Horst
A1  - Greiner, Walter
T1  - Moments of event observable distributions and many-body correlations
N2  - We investigate event-by-event fluctuations for ensembles with non-fixed multiplicity. Moments of event observable distributions, like total energy distribution, total transverse momentum distribution, etc, are shown to be related to the multi-body correlations present in the system. For classical systems, these moments reduce in the absence of any correlations to the mo- ments of particle inclusive momentum distribution. As a consequence, a zero value for the recently introduced Phi-variable is shown to indicate the van- ishing of two-body correlations from one part, and of correlations between multiplicity and momentum distributions from the other part. It is often misunderstood as a measure of the degree of equilibration in the system.
KW  - Ereignisschwankungen
KW  - Vielkörperkorrelationen
KW  - Event-by-event fluctuations
KW  - many-body correlations
Y1  - 1999
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3133
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-22631
UR  - http://www.arxiv.org/abs/nucl-th/9903017
ER  -