A data sample of 84.37 pb$^{-1}$ of \ppb~ collisions
at $\sqrt{\mbox{s}}$ = 1.8 TeV recorded by the Collider Detector at
Fermilab is analyzed in search of scalar quarks (squarks, $\sq$) 
and gluinos ($\gls$). The final state of large missing energy plus 
$\ge$ 3 jets, characteristic of hadroproduction
and subsequent decays of squarks and gluinos within the minimal
supersymmetry and supergravity frameworks with $R$-parity conservation,
is used in the search.  The {\it blind} analysis method is followed to avoid 
biases in the data selection.  The search is negative at 
95\% C.L.  for gluino masses  below 300 \gev~ for the 
case $\msq ~\approx ~\mgls$ and  195 \gev~ independent 
of the squark mass.  Being that the limit on the gluino 
mass provides tight fine-tuning  constraints on low-energy 
supersymmetry the result of this search has phenomenological 
implications on models with unification constraints. 
It also demonstrates that the missing energy plus multijet 
channel is a powerful probe for supersymmetry in the 
upcoming Tevatron Collider run.


Posted to /cdf/pub/thesis/cdf5448_met+jets_thesis.ps
    http://www-cdf.fnal.gov/thesis/cdf5448_met+jets_thesis.ps

Posted by smaria@cdfsga