Singlet dark matter in the SU(6)/SO(6) composite Higgs model

Haiying Cai , Giacomo Cacciapaglia (1, 2)

1 IP2I Lyon - Institut de Physique des 2 Infinis de Lyon
2 UCBL - Université Claude Bernard Lyon 1

Singlet scalar Dark Matter can naturally arise in composite Higgs models as an additional stable pseudo-Nambu-Goldstone boson. We study the properties of such a candidate in a model based on $SU(6)/SO(6)$, with the light quark masses generated by 4-fermion interactions. The presence of non-linearities in the couplings allows to saturate the relic density for masses $400 < m_{\rm DM} < 1000$ GeV, and survive the bound from Direct Detection. The viable parameter regions are in reach of the sensitivities of future upgrades, like XENONnT and LZ.

Mots clés: Beyond the standard model; Higgs model: composite; dark matter: singlet; dark matter: scalar; fermion: interaction; singlet: scalar; quark: mass; symmetry: SO(6); symmetry: SU(6); dark matter: direct detection; dark matter: relic density; sensitivity; stability; upgrade

Domaines: Physique des Hautes Energies - Phénoménologie [hep-ph]

Haiying Cai, Giacomo Cacciapaglia. Singlet dark matter in the SU(6)/SO(6) composite Higgs model. Physical Review D, 2021, 103 (5), pp.055002. ⟨10.1103/PhysRevD.103.055002⟩. ⟨hal-02908373⟩