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14 TeV can exclude at 95% C.L. up to a mass of roughly 5 TeV for a value of the coupling 9 g ′ 1 = 0 . 4. For 100 fb − 1 and for the same value of the coupling, the LHC can exclude at 95% C.L. masses up to roughly 6 TeV. For 10 fb − 1 it will be possible to exclude a Z ′ B − L boson for M$_{Z}$ ′ = 600 GeV if the coupling is greater than 1 . 8 · 10 − $^{2}$(9 · 10 − $^{3}$) for muons(electrons), and values of the coupling greater than 1 . 5 · 10 − $^{2}$(6 . 5 · 10 − $^{3}$) for an integrated luminosity of 100 fb − $^{1}$. Figure 14b shows the integrated luminosity that is required to excluded a certain Z ′ B − L boson mass for fixed values of the coupling. As previously noticed, electrons and muons set the same limits for g ′ 1 ≥ 0 . 1, a smaller value than for √$_{s}$ = 10 TeV due to the improved resolutions. An integrated luminosity of 10 fb − 1 is required to exclude a Z ′ B − L mass up to 3 . 8 TeV for g ′ 1 = 0 . 2, instead 40 fb − 1 reduces this to g ′ 1 = 0 . 1. For an integrated luminosity of 10 

