Search for R -parity violation in multilepton final states in pp̅ collisions at √ s = 1.8 TeV

The result of a search for gaugino pair productionwith a trilepton signature is reinterpretedin the framework of minimal supergravity(MSUGRA) with R-parityviolation via leptonic lambdaYukawa couplings. The search used 95 pb(-1) of p (p) over bar collisions at root s = 1.8 TeV recorded by the D empty setdetector at the Fermilab Tevatron. A large domain of the MSUGRA parameter spaceis excluded for lambda(121), lambda(122)greater than or equal to 10(-4).