Abstract: The search for Dark Matter (DM) uses information from Earth (e.g. at the Large Hadron Collider (LHC) in Geneva) and from our Galaxy (simulations predict a centrally concentrated DM halo around the Galaxy).
I will focus on the excess photon signal measured by satellite experiment Fermi-LAT in the direction of the center of our Galaxy with energies of about 1-10 GeV, which might stem from DM annihilation.
I discuss uncertainties in modelling a DM annihilation signal stemming from high-energy-physics and that such uncertainties are of utmost importance to determine the consistency of models with the signal. We have used this knowledge to explore possible interpretations of the signal. We found that the signal is consistent with the annihilation of a neutralino with a mass of about 85 GeV within the minimal Supersymmetry (SUSY) extension of the Standard Model. The solutions have very constrained parameters and give very clear predictions for LHC and other DM searches: the next LHC run will be able to prove or disprove it.