Analysis of Bose-Einstein correlations in e+e- -> W+W- events including final state interactions

Details Analysis of Bose-Einstein correlations in e+e- -> W+W- events including final state interactions Analysis of Bose-Einstein correlations in e+e- -> W+W- events including final state interactions

1998-09-04

arxiv.org/abs/hep-ph/9809274v1

Phys.Rev. D58 (1998) 114013

Physics

High Energy Physics

High Energy Physics - Phenomenology

7pages, 4 figures

Scientific paper

10.1103/PhysRevD.58.114013

Recently DELPHI Collaboration reported new data on Bose-Einstein correlations (BEC) measured in e+e- -> W^+W^- events. Apparently no enhancement has been observed. We have analyzed these data including final state interactions (FSI) of both Coulomb and strong (s-wave) origin and found that there is enhancement in BEC but it is overshadowed by the FSI which are extremely important for those events. We have found the following values for the size of the interaction range beta and the degree of coherence lambda: beta=0.87 +/- 0.31fm and lambda=1.19 +/- 0.48, respectively.

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