Multicomponent Dark Matter from Gauge Symmetry

Abstract

The composition of Dark Matter (DM) remains an important open question. The current data do not distinguish between single- and multi-component DM, while in theory constructions it is often assumed that DM is composed of a single field. In this work, we study a hidden sector which naturally entails multicomponent DM consisting of spin-1 and spin-0 states. This UV complete set-up is based on SU(3) hidden gauge symmetry with the minimal scalar field content to break it spontaneously. The presence of multiple DM components is a result of a residual Z_2 x Z'_2 symmetry which is part of an unbroken global U(1) x Z'_2 inherent in the Yang-Mills systems. We find that the model exhibits various parametric regimes with drastically different DM detection prospects. In particular, we find that the direct detection cross section is much suppressed in large regions of parameter space as long as the Standard Model Higgs mixes predominantly with a single scalar from the hidden sector. The resulting scattering rate is often beyond the level of sensitivity of XENON1T, while still being consistent with the thermal WIMP paradigm.

v2: 25 pages, added references, small text adjustments

References in corpus (16)

• Dark Matter Results from First 98.7-day Data of PandaX-II Experiment
• Background model systematics for the Fermi GeV excess
• micrOMEGAs4.1: two dark matter candidates
• Higgs-field Portal into Hidden Sectors
• Heavy Dark Matter Through the Higgs Portal
• WIMP dark matter, Higgs exchange and DAMA
• A second Higgs from the Higgs portal
• The minimal model of fermionic dark matter
• Dark Matter from a Classically Scale-Invariant $SU(3{)}_X$
• NMSSM Interpretation of the Galactic Center Excess
• Axial Dark Matter: the case for an invisible Z'
• VDM: A model for Vector Dark Matter
• A minimal model for two-component dark matter
• Generating X-ray lines from annihilating dark matter
• Fundamental statistical limitations of future dark matter direct detection experiments
• Multi-component Dark Matter through a Radiative Higgs Portal

Cited by in corpus (5)

• Neutrino Masses and Absence of Flavor Changing Interactions in the 2HDM from Gauge Principles
• Pseudo Nambu-Goldstone Dark Matter: Examples of Vanishing Direct Detection Cross Section
• Implications of Two-component Dark Matter Induced by Forbidden Channels and Thermal Freeze-out
• Vacuum Stability and Perturbativity of SU(3) Scalars
• The multicomponent dark matter structure and its possible observed manifestations