Bose–Einstein correlations in W-pair decays with an event-mixing technique
Physics Letters BPublished 22 December 2004Open access
S. Schael, R. Barate, R. Brunelière, I. De Bonis, D. Décamp, C. Goy
Citations30
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Abstract
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.
Keywords
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