programs, using the CTEQ6 parton distribution functions (PDF) [@Pumplin:2002vw]. Events generated with are processed with  [@pythia] to provide parton showering, hadronization, and the underlying event description. The matrix element/parton shower matching is performed using the approach described in Ref. [@mlm]. Generated events are processed with the [@G4] based simulation of the CMS detector, and then reconstructed with the same software used for data.

The simulation of the $\ttbar$, $\PW$+jets, $\cPZ$+jets, single-top ($s$, $t$, and $\cPqt$–$\PW$ channels), and diboson samples is performed using . The events containing top-quark pairs are generated accompanied by up to three extra partons in the matrix-element calculation [@Alwall:2007st]. Multijet samples from QCD processes are produced using .

To generate SUSY signal MC events in the context of the CMSSM, the mass spectrum is first calculated with the <span style="font-variant:small-caps;">softsusy</span> program [@softsusy] and the decays with the <span style="font-variant:small-caps;">sus-hit</span> [@Susyhit] package. The generator is used with the SUSY Les Houches Accord (SLHA) interface [@SLHA] to generate the events. The generator-level cross sections and the K-factors for the next-to-leading-order (NLO) cross sections are computed using <span style="font-variant:small-caps;">prospino</span> [@prospino].

We also use SMS MC simulations in the interpretation of the results. In an SMS simulation, a limited set of 