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The European Physical Journal C
ISSN: 1434-6044 (printed version)
ISSN: 1434-6052 (electronic version)
Abstract Volume 5 Issue 2 (1998) pp 275-281
DOI 10.1007/s100529800856
theoretical physics:
Bose-Einstein and colour interference in W-pair decays
J. Häkkinen, M. Ringnér
Department of Theoretical Physics, Lund University, Sölvegatan 14A, S-223 62 Lund, Sweden (e-mail: jari@thep.lu.se, markus@thep.lu.se)
Received: 3 November 1997 / Published online: 10 March 1998
Abstract. We study effects on the W mass measurements at LEP2 from non-perturbative interference effects in the fully hadronic decay channel. Based on a model for Bose-Einstein interference, which is in agreement with LEP1 data, we argue that there are no Bose-Einstein correlations between bosons coming from the different W's. For small reconnection probabilities we rule out the possible experimental signal of colour interference at LEP2, suggested in [1]. The conclusions from this paper are that the theoretical uncertainties in the W mass determination should be smaller than the experimental statistical error.
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Online publication: August 25, 1998
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