2019 Impact factor 4.389
Particles and Fields
Eur. Phys. J. C 5, 275-281
DOI 10.1007/s100529800856

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 [r:gg94]. 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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