A minimal model for two-component dark matter

Abstract

We propose and study a new minimal model for two-component dark matter. The model contains only three additional fields, one fermion and two scalars, all singlets under the Standard Model gauge group. Two of these fields, one fermion and one scalar, are odd under a $Z_2$ symmetry that renders them simultaneously stable. Thus, both particles contribute to the observed dark matter density. This model resembles the union of the singlet scalar and the singlet fermionic models but it contains some new features of its own. We analyze in some detail its dark matter phenomenology. Regarding the relic density, the main novelty is the possible annihilation of one dark matter particle into the other, which can affect the predicted relic density in a significant way. Regarding dark matter detection, we identify a new contribution that can lead either to an enhancement or to a suppression of the spin-independent cross section for the scalar dark matter particle. Finally, we define a set of five benchmarks models compatible with all present bounds and examine their direct detection prospects at planned experiments. A generic feature of this model is that both particles give rise to observable signals in 1-ton direct detection experiments. In fact, such experiments will be able to probe even a subdominant dark matter component at the percent level.

18 pages, 10 figures

References in corpus (42)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
• Particle Dark Matter: Evidence, Candidates and Constraints
• Supersymmetric Dark Matter
• First results from the LUX dark matter experiment at the Sanford Underground Research Facility
• Dark Matter Results from 225 Live Days of XENON100 Data
• Freeze-In Production of FIMP Dark Matter
• Minimal Dark Matter
• Gauge Singlet Scalars as Cold Dark Matter
• The Minimal Model of Nonbaryonic Dark Matter: A Singlet Scalar
• DarkSUSY: Computing Supersymmetric Dark Matter Properties Numerically
• Improved Naturalness with a Heavy Higgs: An Alternative Road to LHC Physics
• micrOMEGAs3.1 : a program for calculating dark matter observables
• The Inert Doublet Model: an Archetype for Dark Matter
• Dark Matter and Collider Phenomenology of Universal Extra Dimensions
• Constraints on the Galactic Halo Dark Matter from Fermi-LAT Diffuse Measurements
• Scalar Multiplet Dark Matter
• Higgs portal, fermionic dark matter, and a Standard Model like Higgs at 125 GeV
• Higgs searches and singlet scalar dark matter: Combined constraints from XENON 100 and the LHC
• Search for the Higgs portal to a singlet fermionic dark matter at the LHC
• Singlet fermionic dark matter
• The singlet scalar as FIMP dark matter
• Mixed axion/neutralino cold dark matter in supersymmetric models
• Impact of semi-annihilations on dark matter phenomenology - an example of Z_N symmetric scalar dark matter
• Vacuum structure and stability of a singlet fermion dark matter model with a singlet scalar messenger
• $Z_3$ Scalar Singlet Dark Matter
• Multi-Component Dark Matter Systems and Their Observation Prospects
• Two-Component Dark Matter
• Gamma rays from the annihilation of singlet scalar dark matter
• Multicomponent Dark Matter in Supersymmetric Hidden Sector Extensions
• Multicomponent dark matter particles in a two-loop neutrino model
• Can we discover dual-component thermal WIMP dark matter?
• Singlet Fermionic Dark Matter and the Electroweak Phase Transition
• Constraints on particle dark matter from cosmic-ray antiprotons
• Antimatter signals of singlet scalar dark matter
• LanHEP - a package for automatic generation of Feynman rules from the Lagrangian. Updated version 3.1
• Two Component Higgs-Portal Dark Matter
• Warm and cold fermionic dark matter via freeze-in
• Detection prospects of singlet fermionic dark matter
• Indirect detection of a subdominant density component of cold dark matter
• Detectability of a subdominant density component of cold dark matter

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• Two component dark matter with inert Higgs doublet: neutrino mass, high scale validity and collider searches
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• Multi-component dark matter from a hidden gauged SU(3)
• Multi-component scalar dark matter from a $Z_N$ symmetry: a systematic analysis
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• Two-component scalar and fermionic dark matter candidates in a generic U$(1{)}_X$ model
• Fermion and scalar two-component dark matter from a $Z_4$ symmetry
• Electroweak phase transition and gravitational waves in a two-component dark matter model
• A two-component vector WIMP -- fermion FIMP dark matter model with an extended seesaw mechanism
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• Two Component Singlet-Triplet Scalar Dark Matter and Electroweak Vacuum Stability
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• A Minimal Model For Two-Component FIMP Dark Matter: A Basic Search
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• Dequantization of electric charge: Probing scenarios of cosmological multi-component dark matter
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• Spin Trio: a dark matter scenario
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• From oversimplified to overlooked: the case for exploring Rich Dark Sectors
• Two-component asymmetric dark matter via bound states and freeze-in decay
• Two Component Doublet-Triplet Scalar Dark Matter stabilising the Electroweak vacuum
• Implications of the Higgs discovery on minimal dark matter
• Higgs particles interacting via a scalar Dark Matter field
• The multicomponent dark matter structure and its possible observed manifestations
• Theoretical and Experimental Constraints on ${\mathbb{Z}}_{2n}$ Multi-Component Dark Matter Models