Bose-Einstein correlations in W-pair decays are studied using data collected by the ALEPH detector at LEP at e(+)e(-) centre-of-mass energies from 183 to 209 GeV. The analysis is based on the comparison of WW --> q (q) over barq (q) over bar events to "mixed" events constructed with the hadronic part of WW --> q (q) over bar lv events. The data are in agreement with the hypothesis that Bose-Einstein correlations are present only for pions from the same W decay. The JETSET model with Bose-Einstein correlations between pions from different W bosons is disfavoured. (C) 2004 Elsevier B.V. All rights reserved.
|Titolo:||Bose-Einstein correlations in W-pair decays with an event-mixing technique|
|Data di pubblicazione:||2005|
|Digital Object Identifier (DOI):||10.1016/j.physletb.2004.12.018|
|Appare nelle tipologie:||1.1 Articolo in rivista|