Co-SIMP Miracle

Abstract

We present a new mechanism for thermally produced dark matter, based on a semi-annihilation-like process, $\chi +\chi +\text{SM}\to \chi +\text{SM}$, with intriguing consequences for the properties of dark matter. First, its mass is low, $\lesssim 1$ GeV (but $\gtrsim 5$ keV to avoid structure-formation constraints). Second, it is strongly interacting, leading to kinetic equilibrium between the dark and visible sectors, avoiding the structure-formation problems of $\chi +\chi +\chi \to \chi +\chi$ models. Third, in the $3\to 2$ process, one dark matter particle is consumed, giving the standard-model particle a monoenergetic recoil. We show that this new scenario is presently allowed, which is surprising (perhaps a "minor miracle"). However, it can be systematically tested by novel analyses in present and near-term experiments. In particular, the Co-SIMP model for thermal-relic dark matter can explain the XENON1T excess.

arXiv commentMinor revisions for clarity, plus a new section on how our predictions can fit the XENON1T excess. Comments are welcome

References in corpus (102)

• Particle Dark Matter: Evidence, Candidates and Constraints
• Supersymmetric Dark Matter
• Neutrino Physics with JUNO
• The Waning of the WIMP? A Review of Models, Searches, and Constraints
• Chandra X-ray Spectroscopic Imaging of Sgr A* and the Central Parsec of the Galaxy
• Precise Relic WIMP Abundance and its Impact on Searches for Dark Matter Annihilation
• Nonthermal Electrons in Radiatively Inefficient Accretion Flow Models of Sagittarius A*
• The SIMP Miracle
• WIMP dark matter candidates and searches - current status and future prospects
• Light Dark Matter Search with Ionization Signals in XENON1T
• Direct Detection of WIMP Dark Matter: Concepts and Status
• Missing Energy Signatures of Dark Matter at the LHC
• Low-Mass Dark Matter Search with the DarkSide-50 Experiment
• DARWIN: towards the ultimate dark matter detector
• Light Dark Matter: Models and Constraints
• The SIMPlest Miracle
• The Neutrino Puzzle: Anomalies, Interactions, and Cosmological Tensions
• LEP Shines Light on Dark Matter
• MeV-scale reheating temperature and thermalization of oscillating neutrinos by radiative and hadronic decays of massive particles
• Bounds on very low reheating scenarios after Planck
• Stellar cooling bounds on new light particles: plasma mixing effects
• Science and Technology of BOREXINO: A Real Time Detector for Low Energy Solar Neutrinos SOLAR NEUTRINOS
• Novel direct detection constraints on light dark matter
• Warm dark matter chills out: constraints on the halo mass function and the free-streaming length of dark matter with 8 quadruple-image strong gravitational lenses
• Constraints on Sub-GeV Dark Matter-Electron Scattering from the DarkSide-50 Experiment
• What does the Bullet Cluster tell us about self-interacting dark matter?
• LHC Bounds on Interactions of Dark Matter
• Cosmology seeking friendship with sterile neutrinos
• Detection of sub-MeV Dark Matter with Three-Dimensional Dirac Materials
• Constraining the Self-Interacting Neutrino Interpretation of the Hubble Tension
• Detecting Superlight Dark Matter with Fermi-Degenerate Materials
• Detection of Light Dark Matter With Optical Phonons in Polar Materials
• The behaviour of dark matter associated with 4 bright cluster galaxies in the 10kpc core of Abell 3827
• Towards Closing the Window on Strongly Interacting Dark Matter: Far-Reaching Constraints from Earth's Heat Flow
• Light Dark Matter at Neutrino Experiments
• Goldstone Bosons as Fractional Cosmic Neutrinos
• GeV-Scale Thermal WIMPs: Not Even Slightly Dead
• Low reheating temperature and the visible sterile neutrino
• Complementarity of dark matter detectors in light of the neutrino background
• Semi-annihilation of Dark Matter
• On the Detectability of Light Dark Matter with Superfluid Helium
• Results on MeV-scale dark matter from a gram-scale cryogenic calorimeter operated above ground
• BBN And The CMB Constrain Neutrino Coupled Light WIMPs
• Directional Detection of Light Dark Matter with Polar Materials
• (Almost) Closing the $\nu$MSM Sterile Neutrino Dark Matter Window with NuSTAR
• First observation of two-neutrino double electron capture in ${}^{124}$Xe with XENON1T
• Diamond Detectors for Direct Detection of Sub-GeV Dark Matter
• Production of the Smallest QED Atom: True Muonium (mu^+ mu^-)
• On the interpretation of dark matter self-interactions in Abell 3827
• Reverse Direct Detection: Cosmic Ray Scattering With Light Dark Matter
• In the Wake of Dark Giants: New Signatures of Dark Matter Self Interactions in Equal Mass Mergers of Galaxy Clusters
• Multi-Channel Direct Detection of Light Dark Matter: Target Comparison
• TeV-Scale Thermal WIMPs: Unitarity and its Consequences
• Communication with SIMP dark mesons via Z'-portal
• Loopy Constraints on Leptophilic Dark Matter and Internal Bremsstrahlung
• BBN constraints on MeV-scale dark sectors. Part II. Electromagnetic decays
• Bounds on Cosmic Ray-Boosted Dark Matter in Simplified Models and its Corresponding Neutrino-Floor
• Thermal Dark Matter Below an MeV
• Phases of Cannibal Dark Matter
• Boosted Dark Matter Interpretation of the XENON1T Excess
• Solar axions cannot explain the XENON1T excess
• Dark Matter as a weakly coupled Dark Baryon
• New Precision Measurement of Hyperfine Splitting of Positronium
• Dark Matter and the XENON1T electron recoil excess
• Re-examining the Solar Axion Explanation for the XENON1T Excess
• Relic density of neutrinos with primordial asymmetries
• Enabling Forbidden Dark Matter
• SIMP model at NNLO in chiral perturbation theory
• Inelastic Dark Matter Electron Scattering and the XENON1T Excess
• Explaining the XENON1T excess with Luminous Dark Matter
• Exploring for sub-MeV Boosted Dark Matter from Xenon Electron Direct Detection
• Light new physics in XENON1T
• Resolving phenomenological problems with strongly-interacting-massive-particle models with dark vector resonances
• Resonant SIMP dark matter
• Super heavy thermal dark matter
• Electric But Not Eclectic: Thermal Relic Dark Matter for the XENON1T Excess
• Limits from BBN on Light Electromagnetic Decays
• Can Nonstandard Neutrino Interactions explain the XENON1T spectral excess?
• Light Dark Matter through Assisted Annihilation
• XENON1T Anomaly and its Implication for Decaying Warm Dark Matter
• Sub-MeV Dark Matter and the Goldstone Modes of Superfluid Helium
• Prospects of Migdal Effect in the Explanation of XENON1T Electron Recoil Excess
• Dark Sector Equilibration During Nucleosynthesis
• Sub-GeV Dark Matter in Superfluid He-4: an Effective Theory Approach
• Simplified SIMPs and the LHC
• Gravitational Production of Hidden Photon Dark Matter in Light of the XENON1T Excess
• Cannibal Dark Matter and Large Scale Structure
• Axion helioscopes as solar magnetometers
• The Thermal History of Composite Dark Matter
• Self-interacting Spin-2 Dark Matter
• Thermal Relic Targets with Exponentially Small Couplings
• Production of dark-matter bound states in the early universe by three-body recombination
• Discovering True Muonium at LHCb
• Direct Detection of MeV-Scale Dark Matter Utilizing Germanium Internal Amplification for the Charge Created by the Ionization of Impurities
• Mirror Dark Matter and Electronic Recoil Events in XENON1T
• Dark Matter, Dark Photon and Superfluid He-4 from Effective Field Theory
• XENON1T observes tritium
• Self-Destructing Dark Matter
• Asymptotic Analysis of the Boltzmann Equation for Dark Matter Relics
• Boosting Assisted Annihilation for a Cosmologically Safe MeV Scale Dark Matter
• Resonant Assisted Annihilation
• Probing protoneutron star density profile from neutrino signals

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• A Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics
• Exoplanets as Sub-GeV Dark Matter Detectors
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• Dark Matter and the XENON1T electron recoil excess
• Re-examining the Solar Axion Explanation for the XENON1T Excess
• Atmospheric Dark Matter and Xenon1T Excess
• Light new physics in XENON1T
• Neutrino self-interactions and XENON1T electron recoil excess
• Boosted dark matter from diffuse supernova neutrinos
• Evaporation of dark matter from celestial bodies
• Electric But Not Eclectic: Thermal Relic Dark Matter for the XENON1T Excess
• Light vector mediators facing XENON1T data
• Freezing-in hadrophilic dark matter at low reheating temperatures
• Heavy Thermal Relics from Zombie Collisions
• Hidden Photon Dark Matter in the Light of XENON1T and Stellar Cooling
• XENON1T Anomaly: A Light $Z^{\prime }$
• Two dark matter candidates: the case of inert doublet and singlet scalars
• Recycled Dark Matter
• An Active-to-Sterile Neutrino Transition Dipole Moment and the XENON1T Excess
• Scalar and Fermion Two-component SIMP Dark Matter with an Accidental ${\mathbb{Z}}_4^{}$ Symmetry
• Exothermic Dark Matter for XENON1T Excess
• On-shell mediator dark matter models and the Xenon1T anomaly
• Solar Neutrino Scattering with Electron into Massive Sterile Neutrino
• Xenon1T excess from electron recoils of non-relativistic Dark Matter
• Sun Heated MeV-scale Dark Matter and the XENON1T Electron Recoil Excess
• Constraining Dark Matter properties with the first generation of stars
• Shedding New Light on Sterile Neutrinos from XENON1T Experiment
• Dark Matter from Exponential Growth
• XENON1T solar axion and the Higgs boson emerging from the dark
• Probing Light Dark Matter through Cosmic-Ray Cooling in Active Galactic Nuclei
• Galactic Origin of Relativistic Bosons and XENON1T Excess
• Pushing the frontier of WIMPy inelastic dark matter: journey to the end of the periodic table
• WIMPs Without Weakness: Generalized Mass Window with Entropy Injection
• Dark Matter, Muon Anomalous Magnetic Moment and the XENON1T Excess
• Constraints on electron-scattering interpretation of XENON1T excess
• An Analytic Approach to Light Dark Matter Propagation
• Roadmap to Thermal Dark Matter Beyond the WIMP Unitarity Bound
• Canonical seesaw implication for two-component dark matter
• EFT Approach of Inelastic Dark Matter for Xenon Electron Recoil Detection
• WIMP and FIMP dark matter in the inert doublet plus singlet model
• Dark matter relic density in strongly interacting dark sectors with light vector mesons
• An Asymmetric SIMP Dark Matter Model
• Scalar Co-SIMP Dark Matter: Models and Sensitivities
• Dark Matter Freeze-out via Catalyzed Annihilation
• Constraints on Light Leptophilic Dark Matter Mediators from Decay Experiments
• $(g-2{)}_{e,\mu }$ and strongly interacting dark matter with collider implications
• Low Scale String Theory Benchmarks for Hidden Photon Dark Matter Interpretations of the XENON1T Anomaly
• Connecting Low scale Seesaw for Neutrino Mass to Inelastic sub-GeV Dark Matter with Abelian Gauge Symmetry
• Mass-varying Dark Matter from a Phase Transition
• Explorations of pseudo-Dirac dark matter having keV splittings and interacting via transition electric and magnetic dipole moments
• Semi-Annihilation of Fermionic Dark Matter
• Vector dark matter production from catalyzed annihilation
• Undulating Dark Matter
• Boosted dark matter from semi-annihilations in the galactic center
• Dark Fluxes from Accreting Black Holes and Direct Detections
• Reshuffled Strongly Interacting Massive Particle Dark Matter
• Constraining the Secluded and Catalyzed Annihilation Dark Matter with Fermi-LAT and Planck Data
• Sub-GeV Dark Matter Direct Detection with Neutrino Observatories
• Dark Dwarfs: Dark Matter-Powered Sub-Stellar Objects Awaiting Discovery at the Galactic Center
• Confronting global 21-cm signal with ${\mathbb{Z}}_3$ symmetric dark matter models
• Strongly-interacting massive particle and dark photon in the era of intensity frontier