Z′mediated dark matter models for the Galactic Center gamma-ray excess
Z′mediated dark matter models for the Galactic Center gamma-ray excess
With the goal of generating the Galactic Center gamma-ray excess, we revisit models in which the dark matter interacts with the Standard Model through the exchange of a new neutral gauge boson, ${Z}^{\ensuremath{'}}$. We find several scenarios that can account for this signal, while respecting all existing constraints from colliders …