Search for R-parity violating supersymmetry via the LLE¯ couplings λ₁₂₁, λ₁₂₂ or λ₁₃₃ in pp¯ collisions at √s=1.96 TeV

Abstract

A search for gaugino pair production with a trilepton signature in the framework of R-parity violating supersymmetry via the couplings λ₁₂₁, λ₁₂₂, or λ₁₃₃ is presented. The data, corresponding to an integrated luminosity of L~360/pb, were collected from April 2002 to August 2004 with the D∅ detector at the Fermilab Tevatron Collider, at a center-of-mass energy of √(s)=1.96 TeV. This analysis considers final states with three charged leptons with the flavor combinations eel, µµl, and eeτ (l=e or µ). No evidence for supersymmetry is found and limits at the 95% confidence level are set on the gaugino pair production cross section and lower bounds on the masses of the lightest neutralino and chargino are derived in two supersymmetric models.