3 ,  s=10 TeV, L=1fb -1 Electrons M$_{e}$+$_{e}$- (TeV) d /dM e + e - (pb/30GeV) 10 -5 10 -4 10 -3 10 -2 0.6 0.8 1 1.2 1.4 1.6 1.8 2 (a) 5 ,  s=10 TeV, L=1fb -1 Electrons M$_{e}$+$_{e}$- (TeV) d /dM e + e - (pb/30GeV) 10 -5 10 -4 10 -3 10 -2 0.6 0.8 1 1.2 1.4 1.6 1.8 2 (b) 3 ,  s=10 TeV, L=1fb -1 Muons M + - (TeV) d /dM$^{µ}$ + - (pb/100GeV) 10 -5 10 -4 10 -3 10 -2 0.6 0.8 1 1.2 1.4 1.6 1.8 2 (c) 5 ,  s=10 TeV, L=1fb -1 Muons M + - (TeV) d /dM$^{µ}$ + - (pb/100GeV) 10 -5 10 -4 10 -3 10 -2 0.6 0.8 1 1.2 1.4 1.6 1.8 2 (d) FIG. 7: dσ dM $_{ll}$( pp → γ, Z, Z ′ B − L → ℓ $^{+}$ℓ $^{−}$) for several masses and couplings ( M$_{Z}$ ′ /T eV , g ′ $_{1}$, Γ$_{Z}$ ′ /GeV ): ( 0 . 6 , 0 . 02 , 0 . 045 ), ( 1 . 0 , 0 . 04 , 0 . 51 ), ( 1 . 4 , 0 . 07 , 1 . 4 ) and ( 1 . 8 , 0 . 15 , 8 . 5 ) for (7a) ℓ = e and (7c) ℓ = µ , corresponding at roughly 3 σ ; ( 0 . 6 , 0 . 027 , 0 . 083 ), ( 1 . 0 , 0 . 06 , 0 . 73 ), ( 1 . 4 , 0 . 12 , 4 . 2 ) and ( 1 . 8 , 0 . 22 , 18 ) for (7b) ℓ = e and (7d) ℓ = µ , corresponding at roughly 5 σ , both from the corresponding lines at 1 fb − 1 of figure 5. Notice that the asymmetry of $_{the peaks is the result of our choice to consider the full interference structure. (}$√$_{s}$ = 10 TeV; 30 GeV and 100 GeV binning for electrons and muons, respectively.) 19