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An excess in $\gamma$-rays emanating from the galactic centre has recentlybeen observed in the Fermi-LAT data. We investigate the new excitingpossibility of fitting the signal spectrum by dark matter annihilatingdominantly to a Higgs-pseudoscalar pair. We show that the fit to the$\gamma$-ray excess for the Higgs-pseudoscalar channel can be just as good asfor annihilation into bottom-quark pairs. This channel arises naturally in afull model such as the next-to-minimal supersymmetric Standard Model (NMSSM)and we find regions where dark matter relic density, the $\gamma$-ray signaland other experimental constraints, can all be satisfied simultaneously.Annihilation into scalar pairs allows for the possibility of detecting theHiggs or pseudoscalar decay into two photons, providing a smoking-gun signal ofthe model.

SUSY Implications from WIMP Annihilation into Scalars at the Galactic Center