# 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.
Type de document :
Pré-publication, Document de travail
t17/092 32 pages, 7 figures. 2017
Domaine :

Littérature citée [80 références]

https://hal-cea.archives-ouvertes.fr/cea-01543288
Contributeur : Emmanuelle De Laborderie <>
Soumis le : mardi 20 juin 2017 - 16:06:34
Dernière modification le : jeudi 5 avril 2018 - 18:16:02
Document(s) archivé(s) le : vendredi 15 décembre 2017 - 22:35:00

### Fichier

1704.07388.pdf
Fichiers produits par l'(les) auteur(s)

### Identifiants

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

### Citation

Guillermo Ballesteros, Adrian Carmona, Mikael Chala. Exceptional Composite Dark Matter. t17/092 32 pages, 7 figures. 2017. 〈cea-01543288〉

### Métriques

Consultations de la notice

## 151

Téléchargements de fichiers