DØ analysis Our simulation M$_{Z}$ ′ Mass Window Expected Bkg Signal Expected Bkg Compatibility (GeV) Lower Limit (GeV) Events Acceptance Events Level 400 353 22.4 ± 0.7 0.172 23.2 1.1 500 445 7.92 ± 0.22 0.188 8.23 1.4 600 536 2.93 ± 0.07 0.199 3.00 1.0 700 626 1.052 ± 0.025 0.207 1.110 2.3 750 673 0.631 ± 0.016 0.209 0.653 1.4 800 718 0.384 ± 0.010 0.211 0.391 0.7 850 762 0.222 ± 0.006 0.212 0.235 2.2 900 810 0.134 ± 0.004 0.216 0.135 0.4 950 858 0.0701 ± 0.0023 0.214 0.0750 2.1 1000 902 0.0410 ± 0.0015 0.216 0.0440 2.0 TABLE I: Comparison of our simulation to the D Ø analysis. The left hand side of the table is taken from Table II of Ref. [6]. extracted from these data are quite looser compared to those we will derive in the next section, therefore we will not show them. IV. Z ′ BOSON SECTOR: DISCOVERY POWER In this section we determine the discovery potential of the LHC considering several center- of-mass (CM) energies, 7, 10 and 14 TeV, using the expected integrated luminosities. In the following subsection we present the latest available experimental constraints and we compare our results for the LHC to the expected ultimate reach at the Tevatron, for ∼ 10 fb − 1 [35]. The production cross sections for the process pp ( p ) → Z ′ B − L for g ′ 1 = 0 . 1 are shown in figure 2. Note that although at the Tevatron the production cross section is smaller than at the LHC, the integrated luminosities we are considering here for the LHC at 7 and 10 TeV (i.e., 1 fb − $^{1}$) are smaller than for the Tevatron (i.e., 10 fb − $^{1}$). 10