Fig. 3 shows the transverse momentum distributions of the reconstructed leptons and the two leading jets, for a signal sample with m$_{χ}$ = 500 GeV. Taking these distributions into consideration, we applied the following selection cuts: 1. Exactly three isolated leptons, not all same-sign, with p$_{T}$ > 25 GeV, of which at least two have p$_{T}$ > 80 GeV; 2. At least two jets with p$_{T}$ > 25 GeV or one jet with p$_{T}$ > 50 GeV; 3. The Z -veto is applied by requiring that | m$_{ℓ}$ $^{+}$ℓ − − m$_{Z}$ | > 25 GeV. 1. The summed transverse momentum in Δ R = 0 . 4 cone around the muon (excluding the muon itself) is < 5 GeV; 2. The ratio of transverse energy in a grid of 3 × 3 calorimeter cells around the muon (including the muons cell) to the transverse momentum of the muon is < 0 . 1. Table II presents the numbers of events passing the selection criteria (in fb). The signal corresponds to model LL, where there are three quasi-degenerate heavy leptons. 10 Isolation cuts for electrons were applied by the default PGS reconstruction algorithm. The isolation cuts for muons are defined as follows: FIG. 3: Distributions of transverse momenta in a signal sample corresponding to m$_{χ}$ = 500 GeV for (a) the three final charged leptons, and (b) the two leading final jets. Lepton p$_{T}$ [GeV]  Number of entries 0 200 400 600 800 1000 0 20 40 60 80 100 120 140 160 Highest P$_{T}$ lepton 2$^{nd}$ highest 3$^{rd}$ highest m$_{χ}$ = 500 GeV (a) Jet p$_{T}$ [GeV] Number of entries 0 200 400 600 800 0 200 400 600 800 1000 Highest p$_{T}$ Jet 2$^{nd}$ highest m$_{χ}$ = 500 GeV (b)