Search for Supersymmetry in opposite-sign same-flavour lepton pairs with the CMS detector

search for Supersymmetry in opposite-sign same-flavour lepton pairs is presented.This final state, in addition with requirements on the number of jets and missingtransverse energy, allows for a large reduction as well as a precise estimation ofStandard Model backgrounds. In the cascade decays of new heavy particles, correlatedproduction of leptons can lead to distinctive edges in the dilepton invariant massspectrum, caused by the mass difference of the new particles.Presented is the search for such an mass edge in a dataset of pp collisions atsqrt(s) = 8 TeV, corresponding to 19.4/fb, collected with the CMS detector at the CERN LHC.