Search for the Supersymmetric Partner of the Top Quark in Dilepton Events from p-pbar Collisions at 1.8 TeV
Abstract
We have searched for the supersymmetric partner of the top quark (stop) in 107 pb-1 of p-pbar collisions at s= 1.8 TeV collected by the Collider Detector at Fermilab (CDF). Within the framework of the Minimal Supersymmetric extension of the Standard Model (MSSM) each of the pair-produced stops is assumed to decay into a lepton, bottom quark and supersymmetric neutrino. Such a scenario would give rise to events with two leptons, two hadronic jets, and a substantial imbalance of transverse energy. No evidence of such a stop signal has been found. We calculate a 95% confidence level (C.L.) upper limit on the stop production cross section, which excludes stop masses in the region (80<m<135 GeV/c2) in the mass plane of stop versus sneutrino.
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