# Exceptional Composite Dark Matter

Abstract : We study the dark matter phenomenology of non-minimal composite Higgs models with $SO(7)$ broken to the exceptional group $G_2$. In addition to the Higgs, three pseudo-Nambu-Goldstone bosons arise, one of which is electrically neutral. A parity symmetry is enough to ensure this resonance is stable. In fact, if the breaking of the Goldstone symmetry is driven by the fermion sector, this $\mathbb{Z}_2$ symmetry is automatically unbroken in the electroweak phase. In this case, the relic density, as well as the expected indirect, direct and collider signals are then uniquely determined by the value of the compositeness scale, $f$. Current experimental bounds allow to account for a large fraction of the dark matter of the Universe if the dark matter particle is part of an electroweak triplet. The totality of the relic abundance can be accommodated if instead this particle is a composite singlet. In both cases, the scale $f$ and the dark matter mass are of the order of a few TeV.
Document type :
Preprints, Working Papers, ...
Domain :

Cited literature [64 references]

https://hal-cea.archives-ouvertes.fr/cea-01543288
Contributor : Emmanuelle de Laborderie Connect in order to contact the contributor
Submitted on : Tuesday, June 20, 2017 - 4:06:34 PM
Last modification on : Wednesday, April 14, 2021 - 12:11:43 PM
Long-term archiving on: : Friday, December 15, 2017 - 10:35:00 PM

### File

1704.07388.pdf
Files produced by the author(s)

### Identifiers

• HAL Id : cea-01543288, version 1
• ARXIV : 1704.07388

### Citation

Guillermo Ballesteros, Adrian Carmona, Mikael Chala. Exceptional Composite Dark Matter. 2017. ⟨cea-01543288⟩

Record views