  The recently reported CDF excess at $120\,-\, 160\,GeV$ in invariant mass
distribution of jet pairs accompanying $W$-boson is tentatively interpreted as
a bound state of two $W$ decaying to quark-anti-quark pair. Non-perturbative
effects of EW interaction obtained by application of Bogoliubov compensation
approach lead to such bound state due to existence of anomalous three-boson
gauge-invariant effective interaction. The application of this scheme gives
satisfactory agreement with existing data without any adjusting parameter but
the bound state mass $145\,GeV$.
