We report on a search for supersymmetry using the DØ detector. The 1994–1996 data sample of $\sqrt{s}=1.8\mathrm{}$ TeV $p\overline{p}$ collisions was analyzed for events containing two leptons $(e$ or $\mu ),$ two or more jets, and missing transverse energy. Assuming the minimal supergravity model, with $A_0=0\mathrm{}$ and $\mu <0,$ various thresholds were employed to optimize the search. No events were found beyond expectation from the background. We set a lower limit at the 95% C.L. of 255 $\mathrm{GeV}{/c}^2$ for equal mass squarks and gluinos for $\tan \beta =2,$ and present exclusion contours in the ${(m}_0{,m}_{1/2})$ plane for $\tan \beta =2\mathrm{}$–6.

• Received 9 February 2000

DOI:https://doi.org/10.1103/PhysRevD.63.091102