The study of the directional dependence of two-particle correlations in the hadronic decays of the Z(0) boson is performed using the data collected by the DELPHI experiment in the 1992-1995 running periods. The comparison between the transverse, R-perpendicular to, and longitudinal, R-parallel to, correlation radii confirms the string model prediction that the transverse correlation length is smaller than the longitudinal one, with the measured values of R-perpendicular to = 0.53 +/- 0.08 fm and R-parallel to = 0.85 +/- 0.08 fm, for selected Z(0) --> q (q) over bar events. (C) 2000 Published by Elsevier Science B.V. All rights reserved.
Two-dimensional analysis of the Bose-Einstein correlations in e(+)e(-) annihilation at the Z(0) peak / Delphi, Collaboration; Abreu, P.; Adam, W.; Canale, Vincenzo. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 471:(2000), pp. 460-470. [10.1016/S0370-2693(99)01391-X]
Two-dimensional analysis of the Bose-Einstein correlations in e(+)e(-) annihilation at the Z(0) peak
CANALE, VINCENZO
2000
Abstract
The study of the directional dependence of two-particle correlations in the hadronic decays of the Z(0) boson is performed using the data collected by the DELPHI experiment in the 1992-1995 running periods. The comparison between the transverse, R-perpendicular to, and longitudinal, R-parallel to, correlation radii confirms the string model prediction that the transverse correlation length is smaller than the longitudinal one, with the measured values of R-perpendicular to = 0.53 +/- 0.08 fm and R-parallel to = 0.85 +/- 0.08 fm, for selected Z(0) --> q (q) over bar events. (C) 2000 Published by Elsevier Science B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
