This paper presents an analysis of the multiplicity distributions of charged particles produced inZ 0 hadronic decays in the DELPHI detector. It is based on a sample of 25364 events. The average multiplicity is n ch>=20.71±0.04(stat)±0.77(syst) and the dispersionD=6.28±0.03(stat)±0.43(syst). The data are compared with the results at lower energies and with the predictions of phenomenological models. The Lund parton shower model describes the data reasonably well. The multiplicity distributions show approximate KNO-scaling. They also show positive forward-backward correlations that are strongest in the central region of rapidity and for particles of opposite charge.
Charged particle multiplicity distributions inZ 0 hadronic decays / Delphi, Collaboration; Abreu, P.; Adam, W.; Canale, Vincenzo. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - STAMPA. - 50:(1991), pp. 185-194. [10.1007/BF01474073]
Charged particle multiplicity distributions inZ 0 hadronic decays
CANALE, VINCENZO
1991
Abstract
This paper presents an analysis of the multiplicity distributions of charged particles produced inZ 0 hadronic decays in the DELPHI detector. It is based on a sample of 25364 events. The average multiplicity is n ch>=20.71±0.04(stat)±0.77(syst) and the dispersionD=6.28±0.03(stat)±0.43(syst). The data are compared with the results at lower energies and with the predictions of phenomenological models. The Lund parton shower model describes the data reasonably well. The multiplicity distributions show approximate KNO-scaling. They also show positive forward-backward correlations that are strongest in the central region of rapidity and for particles of opposite charge.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
