Search for Gluinos and Squarks Using Like-Sign Dileptons in p-pbar Collisions at sqrt(s)=1.8 TeV

We present results of the first search for like-sign dilepton ($e^{\pm}e^{\pm}$, $e^{\pm}\mu^{\pm}$, $\mu^{\pm}\mu^{\pm}$) events associated with multijets and large missing energy using 106 \ipb\ of data in \ppbar\ collisions at $\sqrt{s} = 1.8$ TeV collected during 1992-95 by the CDF experiment. Finding no events that pass our selection, we examine pair-production of gluinos ($\gluino$) and squarks ($\squark$) in a constrained framework of the Minimal Supersymmetric Standard Model. At $\tan\beta = 2$ and $\mu=-800$ \gevcc, we set 95\% confidence level limits of $\mgluino > 221$ \gevcc\ for $\mgluino \simeq \msquark$, and $\mgluino > 168$ \gevcc for $\msquark \gg \mgluino$, both with small variation as a function of $\mu$.