The Discovery Potential of Supersymmetry at CMS within the mSUGRA Model Using Same-Sign Di-Muons

A detailed study of the same-sign muon signature within the mSUGRA model is described. Selection criteria based on the missing transverse energy in the events and the jet and muon transverse momenta are applied. The results indicate that an excess of SUSY events over the Standard Model background processes can be statistically significant for an integrated luminosity of less than 10 fb^-1 for many benchmark points with m_1/2 up to 650 GeV/c^2.