Search For Chargino-Neutralino Associated Production At The Fermilab Tevatron Collider

We have searched in p (p) over bar collisions at root s = 1.8 TeV for events with three charged leptons and missing transverse energy. In the minimal supersymmetric standard model, we expect trilepton events from chargino-neutralino (<(chi)over tilde>(+/-)(1)<(chi)over tilde>(0)(2) pair production, with subsequent decay into leptons. We observe no candidate e(+)e(-)e(+/-), e(+)e(-)mu(+/-), e(+/-)mu(+)mu(-), or mu(+)mu(-)mu(+/-) events in 106 pb(-1) integrated luminosity. We present limits on the sum of the branching ratios times cross section for the four channels: sigma(<(chi)over tilde>1)(+/-)(<(chi)over tilde>2)B-0(<(chi)over tilde>(+/-)(1)<(chi)over tilde>(0)(2) --> 3l + X) < 0.34 pb, M(<(chi)over tilde>1)(+/-) > 81.5 GeV/c(2), and M(<(chi)over tilde>2)(0) > 82.2 GeV/c(2) for tan beta = 2, mu = -600 GeV/c(2), and M-(q over tilde) = M-(g over tilde).