Search for R-parity violation in multilepton final states in $p\overline{p}$ collisions at $\sqrt{s}=1.8\mathrm{}\hspace{0.5em}\mathrm{TeV}$

The result of a search for gaugino pair production with a trilepton signature is reinterpreted in the framework of minimal supergravity (MSUGRA) with R-parity violation via leptonic λ Yukawa couplings. The search used 95 ${\mathrm{pb}}^{-1}$ of $p\overline{p}$ collisions at $\sqrt{s}=1.8\mathrm{}\hspace{0.5em}\mathrm{TeV}$ recorded by the DØ detector at the Fermilab Tevatron. A large domain of the MSUGRA parameter space is excluded for ${\lambda }_{121},$ ${\lambda }_{122}>~{10}^{-4}.$