In this talk, I will present the discovery potential of the high mass dielectron resonances analysis with the data provided by the LHC up to 2030. This search is extremely sensitive to the proton-proton center of mass energy making possible a discovery soon after the LHC restarts in 2015 at sqrt(s)= 13 TeV. If such a signal is to be found, its properties will be studied in detail. I will present projections for its spin determination and the measurement of its forward-backward asymmetry and production mode fractions.
