Remarks Concerning the Study of Four-Jet Events from Hadronic Decays of   the Z0
  The angular correlations of four-jet events from hadronic decays of the Z0 have been studied in the past mainly to extract from them the fundamental constants of quantum chromodynamics called colour factors. Previous studies have used all the available phase-space in order to maximize statistics. In this note we want to point out the possibility that significant differences between experiment and theory in restricted regions of phase-space might have escaped detection. Such differences could be a harbinger of the existence of new particles. Some preliminary results are presented. 
H.Jeremie, P.Leblanc, E.Lefebvre, D.Davignon, G.Karapetian;   (Universite de Montreal)