A Singlet Dark Matter in the SU(6)/SO(6) Composite Higgs Model

TL;DR

This paper explores a singlet scalar dark matter candidate emerging from an $SU(6)/SO(6)$ composite Higgs model, demonstrating its viability within current experimental bounds and future detection prospects.

Contribution

It introduces a novel composite Higgs model with a singlet scalar dark matter candidate that naturally satisfies relic density and detection constraints.

Findings

Relic density can be achieved for dark matter masses between 400 and 1000 GeV.

The model's parameter space is compatible with current direct and indirect detection bounds.

Future experiments like XENONnT and LZ can probe the viable regions.

Abstract

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 and Indirect Detection. The viable parameter regions are in reach of the sensitivities of future upgrades, like XENONnT and LZ.