selected muon/electron indices (loose, tight, isolated, "selected" = tight+isolated+cuts)
leading lepton pairs indices (only the one leading pair)
exclusive dilepton categories as a function of the leading lepton pairs
Z-peak exluding categories in ee/mumu final states (we might want to add as extra criterium that none of the lepton pairs should be in the Z peak, even the non-leading ones)
Added