The influence of the Bose-Einstein interference effect on the joint WW hadronic decay is discussed. It is shown that the weight method incorporating this effect into Monte Carlo generators produces in a natural way an excess of average multiplicity as compared to the independent decay of two W bosons. The quantitative results for the average multiplicity and momentum distribution of charged pions, obtained with a simple parametrization of weights compatible with the observed shape of the ''Bose-Einstein ratio'', agree well with the existing data. (C) 1998 Published by Elsevier Science B.V. All rights reserved. References: 17
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