Top Dilepton Cross Section LHC top pair cross section is 160 pb, about 20X Tevatron Selection: Two isolated leptons, muon (electron) PT > 20 GeV ±15 GeV Z mass veto for ee/mumu 1-4 PF jets PT > 30 GeV, |  | < 2.5,  R < 0.4 lepton overlap veto No MET cut for emu, for ee/mumu: PF MET > 30 (50) GeV for >2 (=1) jets 86 tops expected >=2 jet >=0 tag 79 tops expected >=1 jet >=1 tag Simple counting experiment in Njet/Ntag bins
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