Particle correlations in e + e − → W + W − events |
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Authors: | N. E. Pukhaeva |
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Affiliation: | (1) University of Antwerpen, Antwerpen, Belgium;(2) Joint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, Russia |
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Abstract: | Preliminary results are reported on the two-particle correlation function R(Q) in hadronic Z decays, fully hadronic WW decays, and mixed hadronic-leptonic WW decays using data collected by the DELPHI detector at LEP at energies between 189 and 206 GeV. Evidence for Bose-Einstein correlations was observed in all three cases. The event mixing technique was used to determine correlations between particles arisingfrom different W bosons in fully hadronic WW decays. An excess of like-sign particle pairs with low four-momentum difference in fully hadronic WW events is observed, consistent with the effect expected from correlations between identical particles from different W bosons. |
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