Speaker
Description
Observations with the Fermi Large Area Telescope indicate an excess in gamma rays originating from the center of our Galaxy. A possible explanation for this excess is the annihilation of Dark Matter (DM) particles. We have investigated the annihilation of neutralinos as DM candidates within the phenomenological Minimal Supersymmetric Standard Model (pMSSM) and found solutions that are not excluded by direct detection, indirect detection or collider experiments. These SUSY scenarios consist of a bino-like DM particle with a mass around 100 GeV, and a next-to-lightest SUSY particle with a mass around 125 GeV. The solutions are consistent with the most recent limits on the annihilation cross section derived from dwarf galaxies and can account for a possible weak excess signal observed in the direction of the dwarf galaxy Reticulum II.
In addition, two global fit studies performed in the pMSSM seem to suggest the same compressed SUSY spectra. These scenarios are however not probed by traditional (monojet or electroweak) SUSY searches in the LHC. With the aid of an extended search strategy for ATLAS and CMS we can exclude or discover these favored pMSSM spectra with the LHC14.
