Search for R-parity-violating supersymmetry in events with four or more leptons in $ \sqrt{s}=7\;\mathrm{TeV} $ pp collisions with the ATLAS detector

Abstract

AbstractA search for new phenomena in final states with four or more leptons (electrons or muons) is presented. The analysis is based on 4.7 fb−1of$ \sqrt{s}=7\;\mathrm{TeV} $proton-proton collisions delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with Standard Model expectations in two signal regions: one that requires moderate values of missing transverse momentum and another that requires large effective mass. The results are interpreted in a simplified model ofR-parity-violating supersymmetry in which a 95% CL exclusion region is set for charged wino masses up to 540 GeV. In anR-parity-violating MSUGRA/CMSSM model, values ofm1/2up to 820 GeV are excluded for 10<tanβ <40.