• Accepted Paper

Dark matter in composite Higgs models with a scotogenic EFT

Yu Chen and Werner Porod

Phys. Rev. D - Accepted 15 October, 2026

DOI: https://doi.org/10.1103/bm7v-csk4

Abstract

We discuss a class of Composite Higgs models with a fermionic UV completion that can explain the dark matter relic density. The resulting low-energy theory resembles so-called scotogenic models. A residual ℤ2 symmetry implies that one of the pseudo-Nambu-Goldstone bosons is stable and therefore is a viable dark matter candidate. As a concrete example, we take a model based on the SU(6)/Sp(6) coset, which in principle contains four dark matter candidates. However, only three of them can produce a relic density consistent with observations. We perform a MCMC study focusing on dark matter observables to explore the available parameter space of the effective theory. In particular, we find that spin-1 resonances play an important role in a substantial part of the parameter space. Finally, we comment on possible LHC signatures of this model class.

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