Many very useful comments have already been posted. Let me just add a few:

-in section 10 the data/MC comparison for the single photon spectrum does not match well. You blame "QCD background". I think this should be substantiated

-in section 11 the syst uncertainty associated to ET miss looks to me extremely small,while you have a sharp cut at 80 GeV?

-in table 30 the numbers for the Bkg do not sum up correctly

With regards

Daniel

-- MassimilianoBellomo - 15-Feb-2012