Probing the scotogenic FIMP at the LHC
We analyse the signatures at the Large Hadron Collider (LHC) of the scotogenic model, when the lightest Z 2-odd particle is a singlet fermion and a feebly interacting massive particle (FIMP). We further assume that the singlet fermion constitutes the dark matter and that it is produced in the early Universe via the freeze-in mechanism. The small couplings required to reproduce the observed dark matter abundance translate into decay-lengths for the next-to-lightest Z 2-odd particle which can be macroscopic, potentially leading to spectacular signatures at the LHC. We characterize the possible signals of the model according to the spectrum of the Z 2-odd particles and we derive, for each of the cases, bounds on the parameters of the model from current searches.
KeywordsBeyond Standard Model Neutrino Physics
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