Paper detail

Confronting the Fermi Line with LHC data: an Effective Theory of Dark Matter Interaction with Photons

We describe an effective theory of interaction between pairs of dark matter particles and pairs of photons. Such an interaction could accomodate $χ\barχ\rightarrowγγ$ processes which might be the cause of the observed feature in the FermiLAT spectrum, as well as $γ^*/Z\rightarrow γχ\barχ$ processes, which would predict excesses at the LHC in the $γ+\missET$ final-state. We reinterpret an ATLAS $γ+\missET$ analysis and the observed Fermi feature in the parameter space of our new effective theory to assess their consistency.