Confronting the Galactic Center Gamma Ray Excess With a Light Scalar
  Dark Matter
  The Fermi Large Area Telescope observed an excess in gamma ray emission
spectrum coming from the center of the Milky Way galaxy. This data reveals that
a light Dark Matter (DM) candidate of mass in the range 31-40 GeV, dominantly
decaying into $b\bar b$ final state, can explain the presence of the observed
bump in photon energy. We try to interpret this observed phenomena by sneutrino
DM annihilation into pair of fermions in the Supersymmetric Inverse Seesaw
Model (SISM). This model can also account for tiny non-zero neutrino masses
satisfying existing neutrino oscillation data. We show that a Higgs portal DM
in this model is in perfect agreement with this new interpretation besides
satisfying all other existing collider, cosmological and low energy
experimental constraints.
