Wednesday 16 November 2011 Speaker: Manny Olaiya (RAL/PPD) Title: “Search for High Mass Resonances with Dilepton Final States using the CMS detector at the LHC” Abstract: Heavy di-lepton resonances are predicted in theoretical models such as extra gauge bosons (Z') or as Kaluza-Klein graviton excitations (G_KK) in the Randall-Sandrum model. A search for narrow resonances at high mass in the di-muon and di-electron channels performed by the CMS experiment at CERN LHC will be presented, focusing on the di-electron analysis worked on by RAL PPD.