Recent results of the searches for Supersymmetry in final states with one or two leptons at CMS are presented. Many Supersymmetry scenarios, including the Constrained Minimal Supersymmetric extension of the Standard Model (CMSSM), predict a substantial amount of events containing leptons, while the largest fraction of Standard Model background events -which are QCD interactions -gets strongly reduced by requiring isolated leptons. The analyzed data was taken in 2011 and corresponds to an integrated luminosity of approximately L = 1 fb −1 . The center-of-mass energy of the pp collisions was √ s = 7 TeV.

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We compute the electroweak corrections due to the light fermions to the production cross section sigma(gg --> H) and to the partial decay widths Gamma(H --> gammagamma) and Gamma(H --> gg). We present analytic results for these corrections that are expressed in terms of Generalized Harmonic Polylogarithms. We find that for the gluon fusion production cross section and for the decay width Gamma(H --> gg) the corrections are large in the Higgs mass region below 160 GeV, where they grow from 4 to 9% of the lowest order term, while above 160 GeV they are small. For the decay width Gamma(H --> gammagamma) the corrections for Higgs mass above 160 GeV are typically below -5% of the lowest order term but they may reach O(-10%) for m(H) similar to 2m(W). (C) 2004 Elsevier B.V. All rights reserved