Discovery Potential for SM Higgs with $H \to ZZ^{(*)} \to 4l$ at CMS

A prospective analysis is presented for the discovery and properties measurement of the Standard Model Higgs boson in the CMS experiment at the LHC collider. The analysis focuses on the H -> ZZ^ (*) -> 4l + X channel for Higgs boson masses in the range between 120 GeV/c^2 and 600 GeV/c^2. It relies on a full simulation of the detector response and usage of detailed lepton reconstruction tools. Emphasis is put on realistic strategies for the evaluation of experimental systematics and control of physics background processes.