QCD Interconnection Effects \\ in Hadronic $W^{+}{W}^{-}$ and $t\bar{t}$ Events

Abstract

In the events of the type $e^{+}{e}^{-}\to W^{+}{W}^{-}\to$ 4 jets, $e^{+}{e}^{-}\to t\bar{t}\to b{W}^{+}\bar{b}{W}^{-}$, particle production could depend in a non-trivial way on the kinematics of the process. It is shown that QCD interference effects are negligible for energetic perturbative emission, but soft perturbative gluons and non-perturbative fragmentation could induce colour correlations. Possible consequences for LEP 2 and NLC events are briefly addressed.

Comments: 4 pages LaTeX, DTP/94-64