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Motivated by the recent indications for a 750 GeV resonance in the di-photonfinal state at the LHC, in this work we analyse the compatibility of the excesswith the broad photon excess detected at the Galactic Centre. Intriguingly, byanalysing the parameter space of an effective models where a 750 GeVpseudoscalar particles mediates the interaction between the Standard Model anda scalar dark sector, we prove the compatibility of the two signals. We show,however, that the LHC mono-jet searches and the Fermi LAT measurements stronglylimit the viable parameter space. We comment on the possible impact of cosmicantiproton flux measurement by the AMS-02 experiment.

Di-photon excess at LHC and the gamma ray excess at the Galactic Centre