Dark Matter from Anomaly Cancellation

We discuss a class of theories that predict a fermionic dark matter candidate from gauge anomaly cancellation. In this context the symmetry-breaking scale has to be below the multi-TeV scale in order to be in agreement with the cosmological constraints. We discuss the correlation between the dark matter relic density, direct detection and collider constraints. We find that these theories are viable and susceptible to being probed at the LHC. We discuss in great detail the gamma lines from dark matter annihilation showing the possibility to test these predictions in the near future at gamma-ray telescopes such as CTA. We investigate all processes contributing to the total photon flux from dark matter annihilation and point out the unique features that can be used to test these theories for dark matter.