high energy physics phenomenology

Dark matter in composite Higgs models with a scotogenic EFT

arXiv:2607.14210

summary

The paper studies composite Higgs models with a fermionic UV completion that yield a scotogenic effective theory, where a residual Z₂ symmetry stabilizes a pseudo‑Nambu‑Goldstone boson as dark matter, and explores the parameter space and LHC signatures using MCMC scans.

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 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 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.

17 pages, 6 figures + 1 appendix

Topics & keywords

#composite higgs#dark matter#scotogenic models#pseudo-nambu-goldstone bosons#spin-1 resonancesSU(6)/Sp(6) cosetZ2 symmetryMCMCrelic densityeffective field theoryfermionic UV completion
Dark matter in composite Higgs models with a scotogenic EFT · wovepaper