Composite scalar dark matter

By M. Frigerio, A. Pomarol, F. Riva, A. Urbano. 2012

159 citations recorded by the source corpus.

A bstractWe show that the dark matter (DM) could be a light composite scalar η, emerging from a TeV-scale strongly-coupled sector as a pseudo Nambu-Goldstone boson (pNGB). Such state arises naturally in scenarios where the Higgs is also a composite pNGB, as in O(6)/O(5) models, which are particularly predictive, since the low-energy interactions of η are determined by symmetry considerations. We identify the region of parameters where η has the required DM relic density, satisfying at the same time the constraints from Higgs searches at the LHC, as well as DM direct searches. Compositeness, in addition to justify the lightness of the scalars, can enhance the DM scattering rates and lead to an excellent discovery prospect for the near future. For a Higgs mass mh ≃ 125 GeV and a pNGB characteristic scale f ≲ 1 TeV, we find that the DM mass is either mη ≃ 50–70 GeV, with DM annihilations driven by the Higgs resonance, or in the range 100–500 GeV, where the DM derivative interaction with the Higgs becomes dominant. In the former case the invisible Higgs decay to two DM particles could weaken the LHC Higgs signal.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/d9b79edad2201f252c57cac1f713599e3e15fa10

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

In Nuclear and High Energy Physics

Citations in the corpus

$Z_3$ Scalar Singlet Dark Matter (2012, background): “We study renormalisation effects of the potential and find that large semi-annihilation effects require the new physics scale to be as low as TeV, possibly associated with compositeness of dark matter [17].”
A pseudoscalar decaying to photon pairs in the early LHC Run 2 data (2015, background): “Lighter quarks, however, can have different embeddings and one can even choose embeddings to automatically satsify θ = π/2 or θ = π/4 [56].”
Accidental composite dark matter (2015, background): “with supersymmetry [5], with composite [6–9] or partially composite Higgs [10–12], with a mirror-SM sector [13] or quirks [14] or a fourth generation [15] as well as from a phenomenological point of view, in order to realise special situations (such as inelastic DM, asymmetric DM, strongly interacti”
Implications of a light Higgs in composite models (2012, background): “This guarantees the stability of the pseudo-scalar that could be used as dark matter candidate [21].”