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→qq̄qq̄ events to "mixed" events constructed with the hadronic part of WW→qq̄ℓν 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.
|Numero di pagine||11|
|Rivista||PHYSICS LETTERS. SECTION B|
|Stato di pubblicazione||Published - 2005|
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics