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Estimation of SM backgrounds to SUSY search in the 1-lepton + jets + MET channel

The ATLAS Collaboration has reported the first results of the search for SUSY particles in 1-lepton + 3 jets + MET final states. An essential ingredient for these results is a reliable background estimation in the signal region, in particular of the ttbar, W+jets and QCD backgrounds. The estimation of these three backgrounds is explained in this paper. The ttbar and W+jets backgrounds are obtained from a background dominated control region and extrapolated to the signal region, whereas for the estimation of the QCD background a matrix method is used.

preprint2011arXivOpen access
Jeanette M. Lorenz
hep-exhep-ph
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Jeanette M. Lorenz

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