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001-es BibID:	BIBFORM099868
Első szerző:	The OPAL Collaboration
Cím:	Genuine correlations of like-sign particles in hadronic Z0 decays / The OPAL Collaboration
Dátum:	2001
ISSN:	0370-2693
Megjegyzések:	Correlations among hadrons with the same electric charge produced in Z0 decays are studied using the high statistics data collected from 1991 through 1995 with the OPAL detector at LEP. Normalized factorial cumulants up to fourth order are used to measure genuine particle correlations as a function of the size of phase space domains in rapidity, azimuthal angle and transverse momentum. Both all-charge and like-sign particle combinations show strong positive genuine correlations. One-dimensional cumulants initially increase rapidly with decreasing size of the phase space cells but saturate quickly. In contrast, cumulants in two- and three-dimensional domains continue to increase. The strong rise of the cumulants for all-charge multiplets is increasingly driven by that of like-sign multiplets. This points to the likely influence of Bose?Einstein correlations. Some of the recently proposed algorithms to simulate Bose?Einstein effects, implemented in the Monte Carlo model Pythia, are found to reproduce reasonably well the measured second- and higher-order correlations between particles with the same charge as well as those in all-charge particle multiplets.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Physics Letters B. - 523 : 1-2 (2001), p. 35-52. -
További szerzők:	Csilling Ákos Dienes Beatrix (1972-) (élettanász, molekuláris biológus) Hajdú Csaba Horváth Dezső (1966-) (kémikus) Pásztor Gabriella Trócsányi Zoltán (1961-) (fizikus)
Pályázati támogatás:	T-029328 OTKA T023793 OTKA F-023259 OTKA
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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