Spin-independent interactions of Dirac Fermionic Dark Matter in the composite Higgs models

TL;DR

This paper investigates how composite Higgs models with approximate U(1) symmetry can suppress the magnetic dipole moment of Dirac fermionic dark matter, analyzing its interactions and potential collider signatures.

Contribution

It introduces an E_6 inspired composite Higgs model with U(1) symmetry violating operators to study dark matter properties and interactions.

Findings

Certain parameter regions evade current experimental constraints.

The model predicts potential observable signatures at the LHC.

Dark matter-nucleon cross section depends on model parameters.

Abstract

According to recent measurements, dark matter magnetic dipole moment is strongly constrained. In the composite Higgs models the magnetic dipole moment of the Dirac dark matter fermion and its mass can be suppressed by the approximate U(1) symmetry. We consider E_6 inspired composite Higgs model (E_6CHM) with U(1) symmetry violating operators, which give rise to dark matter's mass and coupling constant to Higgs boson. The dependence of the spin-independent dark matter-nucleon scattering cross section on the E_6CHM parameters is explored. We argue that there are regions of the parameter space which are still safe from all current constraints and may lead to spectacular LHC signatures.