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We propose a mechanism which could explain a slight excess of top signal raterecently reported by CDF in the framework of the supersymmetric standard model.If the scalar partner of the top (stop) is sufficiently light, the gluino withan appropriate mass could decay into the stop plus the top with almost 100\%branching ratio and experimental signatures of the gluino pair production couldbe indistinguishable from those of the top production in the present integratedluminosity Tevatron running. In this case the standard top signal, $W$ $+$multi-jets events, would be effectively enhanced by the additional gluinocontribution. It is shown, moreover, that such a mechanism can actually work inthe radiative SU(2)$\times$U(1) breaking model without the GUT relationsbetween the gaugino mass parameters.Comment: 8 pages (LaTeX), 3 figures not included (available on request) ;  ITP-SU-94/03, RUP-94-0

Light top squark and heavy top quark signature in the Collider Detector at Fermilab