Measurement of correlations between pions from different W's in e+e- → W+W- events

1997 
Correlations between pions from different W's in e+e− →W+W− events are studied using data collected by the DELPHI detector at LEP running at a centre-of-mass energy of 172 GeV in 1996. At the present level of statistics, no enhancement of the correlation function above that expected from a pair of uncorrelated W's is observed at small values of the four-momentum difference of the pions.
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