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Fermionic WIMPs and Vacuum Stability in the Scotogenic Model

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arxiv 1608.00577 v2 pith:VVFZXHJY submitted 2016-08-01 hep-ph

Manfred Lindner , Alexander Merle , Moritz Platscher , Carlos E. Yaguna This is my paper · ORCID
classification hep-ph
keywords modeldarkmattervacuumfermionicinconsistentscenariosscotogenic
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We demonstrate that the condition of vacuum stability severely restricts scenarios with fermionic WIMP dark matter in the scotogenic model. The sizable Yukawa couplings that are required to satisfy the dark matter constraint via thermal freeze-out in these scenarios tend to destabilise the vacuum at scales below that of the heaviest singlet fermion, rendering the model inconsistent from a theoretical point of view. By means of a scan over the parameter space, we study the impact of these renormalisation group effects on the viable regions of this model. Our analysis shows that a fraction of more than 90% of the points compatible with all known experimental constraints - including neutrino masses, the dark matter density, and lepton flavour violation - is actually inconsistent.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Feasibility to probe the dynamical scotogenic model at the LHC

    hep-ph 2025-12 conditional novelty 5.0 of 10

    In the dynamical scotogenic model, Drell-Yan production of fermionic dark matter could be probed at the HL-LHC for masses 100-220 GeV; scalar DM and VBF channels are unlikely to be observable.

  2. Collider signatures of fermionic scotogenic dark matter

    hep-ph 2025-02 conditional novelty 5.0 of 10

    LHC searches can probe fermionic scotogenic dark matter in the singlet-triplet model, complementing charged lepton flavor violation and relic density constraints.

  3. Lepton flavor violation in the Majorana and Dirac scotogenic models

    hep-ph 2025-02 conditional novelty 5.0 of 10

    In the Majorana and Dirac scotogenic models, the 3-body tau decay τ→3μ can reach branching ratios of about 10^-10 and 10^-11 respectively, after muon constraints and perturbativity are imposed.

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