par Bertrand, Daniel ;Gaudaen, Jan;Johnson, Denis;Wilquet, Gaston ;Alpgard, K; [et al.]
Référence Physics letters. Section B, 123, 5, page (361-366)
Publication Publié, 1983-04
Article révisé par les pairs
Résumé : Results on correlations in charged multiplicity are presented using data from the UA5 detector at the CERN SPS collider. Both short-range and long-range correlations are observed. Our analysis gives no evidence for intrinsic long-range correlations. The observations are consistent with a physical picture in which small clusters are emitted at random along the rapidity axis in the plateau region. This result may indicate that random soft processes play a dominant role in high energy hadronic collisions. The average cluster size is about 2 charged particles, the same as at ISR energies. No variation of cluster size with multiplicity has been observed. The forward-backward long-range correlation and its energy dependence are related to the ratio of the first two moments, variance/mean, of the multiplicity distributions. © 1983.