Transverse and Longitudinal Bose Einstein Correlations in hadronic Z0 Decays

Simple item page
dc.creatorAbbiendi, G.
dc.creatorcollaboration, the OPAL
dc.date2000-02-24
dc.date.accessioned2026-07-07T10:16:32Z
dc.date.available2026-07-07T10:16:32Z
dc.descriptionBose-Einstein correlations in pairs of identical charged pions produced in a sample of 4.3 million Z0 hadronic decays are studied as a function of the three components of the momentum difference, transverse ("out" and "side") and longitudinal with respect to the thrust direction of the event. A significant difference between the transverse, r_t_side, and longitudinal, r_l, dimensions is observed, indicating that the emitting source of identical pions, as observed in the Longitudinally CoMoving System, has an elongated shape. This is observed with a variety of selection techniques. Specifically, the values of the parameters obtained by fitting the extended Goldhaber parametrisation to the correlation function C'= C^{DATA}}/C^{MC} for two-jet events, selected with the Durham algorithm and resolution parameter ycut=0.04, are r_t_out=(0.647+-0.011(stat})+0.022-0.124(syst)) fm, r_t_side=(0.809+-0.009(stat)+0.019-0.032}(syst)) fm, r_l=(0.989+-0.011(stat)+0.030-0.015(syst})) fm and r_l/r_t_side=1.222+-0.027(stat})+0.075-0.012(syst). The results are discussed in the context of a recent model of Bose-Einstein correlations based on string fragmentation.
dc.description18 pages, 7 figures, submitted to Eur. Phys. J. C
dc.identifierhttps://arxiv.org/abs/hep-ex/0002062
dc.identifierhttp://arxiv.org/abs/hep-ex/0002062
dc.identifierEur.Phys.J.C16:423-433,2000
dc.identifierdoi:10.1007/s100520000407
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/173535
dc.subjectHigh Energy Physics - Experiment
dc.titleTransverse and Longitudinal Bose Einstein Correlations in hadronic Z0 Decays
dc.typetext

Files

Collections

arXiv