Holographic Dark Matter and Higgs

TL;DR

This paper explores a model where a composite Higgs boson and a fermionic dark matter candidate arise from strongly interacting theories, predicting measurable deviations in Higgs properties at future colliders and a TeV-scale dark matter particle.

Contribution

It proposes a holographic model linking composite Higgs and dark matter, including an effective Lagrangian with higher-dimensional operators for experimental testing.

Findings

Dark matter candidate X^0 is stable and has TeV-scale mass.

Deviations in Higgs properties could be observed at future colliders.

Model aligns with cosmological and experimental dark matter constraints.

Abstract

We identify possible dark matter candidates within the class of strongly interacting models where electroweak symmetry breaking is triggered by a light composite Higgs boson. In these models, the Higgs boson emerges as a Holographic pseudo-goldstone boson, while dark matter can be identified as a fermionic composite state X^0, which is made stable through a conserved (``dark'') quantum number. An effective lagrangian description of both the Higgs and dark matter is proposed, that includes higher-dimensional operators suppressed by an scale \Lambda_i. These operators will induce deviations from the standard Higgs properties that could be meassured at future colliders (LHC,ILC), and thus provide information on the dark matter scale. The dark matter X^0, is expected to have a mass of order O(TeV), which is in agreement with the values extracted from the cosmological bounds and the experimental searches for dark matter.