Search for Pair Production of Scalar Top Quarks in R-Parity Violating Decay Modes in pp Collisions at ¿s = 1.8 TeV

We present the results of a search for pair productionof scalar top quarks((t) over tilde(1)) in an R-parityviolating supersymmetry scenario in 106 pb(-1) of p (p) overbar collisions at roots=1.8 TeV collected by the Collider Detectorat Fermilab. In this mode each (t) over tilde(1) decays into a tau leptonand a b quark. We search for events with two tau's, one decaying leptonically(e or mu) and one decaying hadronically, and two jets. No candidate events pass our final selection criteria. We set a 95% confidence level lower limit on the (t) over tilde(1) mass at 122 GeV/c(2) for Br((t) over tilde(1)-->taub)=1.