  We study the possible signals at LHC of the minimal models of decaying dark
matter. Those models are characterized by the fact that DM interacts with SM
particles through renormalizable coupling with an additional heavier charged
state. Such interaction allows to produce a substantial abundance of DM in the
early Universe via the decay of the charged heavy state, either in- or
out-of-equilibrium. Moreover additional couplings of the charged particle open
up decay channels for the DM, which can nevertheless be sufficiently long-lived
to be a good DM candidate and within reach of future Indirect Detection
observations. We compare the cosmologically favored parameter regions to the
LHC discovery reach and discuss the possibility of simultaneous detection of DM
decay in Indirect Detection.
