Bose-Einstein correlations are studied in semileptonic (WW → qq ℓ ν) and fully hadronic (WW → qqqq). W-pair decays with the ALEPH detector at LEP at centre-of-mass energies of 172, 183 and 189 GeV. They are compared with those made at the Z peak after correction for the different flavour compositions. A Monte Carlo model of Bose-Einstein correlations based on the JETSET hadronization scheme was tuned to the Z data and reproduces the correlations in the WW → qq ℓ ν events. The same Monte Carlo reproduces the correlations in the WW → qqqq channel assuming independent fragmentation of the two W's. A variant of this model with Bose-Einstein correlations between decay products of different W's is disfavoured.
|Original language||English (US)|
|Number of pages||15|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - Apr 6 2000|
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics