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Impact of Fermionic Electroweak Multiplet Dark Matter on Vacuum Stability with One-loop Matching
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Impact of Fermionic Electroweak Multiplet Dark Matter on Vacuum Stability with One-loop Matching
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We investigate the effect of fermionic electroweak multiplet dark matter models on the stability of the electroweak vacuum using two-loop renormalization group equations (RGEs) and one-loop matching conditions. Such a treatment is crucial to obtain reliable conclusions, compared with one-loop RGEs and tree-level matching conditions. In addition, we find that the requirement of perturbativity up to the Planck scale would give strong and almost mass-independent constraints on the Yukawa couplings in the dark sector. We also evaluate these models via the idea of finite naturalness for the Higgs mass fine-tuning issue.
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