Probing the scotogenic FIMP at the LHC

Hessler, Andre G.; Ibarro, Alejandro; Molinaro, Emiliano; Vogl, Stefan

doi:10.1007/JHEP01(2017)100

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Probing the scotogenic FIMP at the LHC

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Vogl, Stefan
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Hessler, A. G., Ibarro, A., Molinaro, E., & Vogl, S. (2017). Probing the scotogenic FIMP at the LHC. Journal of high energy physics: JHEP, 2017(1): 100. doi:10.1007/JHEP01(2017)100.

Cite as: https://hdl.handle.net/21.11116/0000-0000-CBEA-4

Abstract

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.