A Study of Bose-Einstein Correlations in hadronic W Decays                     
  
Measure`ments of Bose-Einstein correlations in hadronically decaying           
Ws in W+W- events observed in the OPAL detector at LEP are performed           
using data recorded at centre-of-mass energies between 172-202 GeV.            
The correlations are studied separately in the semi-leptonic (qqlv) and        
fully-hadronic (qqqq) final states. Particular emphasis is placed on           
the question of the existance of Bose-Einstein correlations between            
pions from the decays of different W bosons in qqqq events.                    
  
 Parallel session :5                   
 Plenary  session :6a