Heavy Chiral Fermions and Dark Matter

Figure 7

The constraints on 𝑍^′ in the dijet search from CMS (red dots) with integrated luminosity of 1 fb⁻¹ and from ATLAS (blue dots) with integrated luminosity of 0.81 fb⁻¹. The predicted events at LHC through the 𝑍^′ boson of the 𝑈(1)_{𝐵−4𝐿4} with a range of coupling constant (for instance, 𝑔_𝑋=0.3) lie below the current reach of the CMS and ATLAS data. Also plotted is the predicted signal from the sequential 𝑍^′ model (green dashes), for comparison. See [11] for references and details. Figure from [11].