Search for dilepton signatures from minimal low-energy supergravity in pp-bar collisions at s√=1.8 TeV

Abstract

We report on a search for supersymmetry using the DØ detector. The 1994–1996 data sample of s√=1.8 TeV pp-bar collisions was analyzed for events containing two leptons (e or μ), two or more jets, and missing transverse energy. Assuming the minimal supergravity model, with A(0)=0 and μ<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 GeV/c(2) for equal mass squarks and gluinos for tanβ=2, and present exclusion contours in the (m(0),m(1/2)) plane for tanβ=2–6.