Electric But Not Eclectic: Thermal Relic Dark Matter for the XENON1T Excess

Abstract

The identity of dark matter is being sought with increasingly sensitive and voluminous underground detectors. Recently the XENON1T collaboration reported excess electronic recoil events, with most of these having recoil energies around $1-30$ keV. We show that a straightforward model of inelastic dark matter produced via early universe thermal freeze-out annihilation can account for the XENON1T excess. Remarkably, this dark matter model consists of a few simple elements: sub-GeV mass Dirac fermion dark matter coupled to a lighter dark photon kinetically mixed with the Standard Model photon. A scalar field charged under the dark U(1) gauge symmetry can provide a mass for the dark photon and splits the Dirac fermion component state masses by a few keV, which survive in equal abundance and interact inelastically with electrons and nuclei.

arXiv comment8 pages, 2 figures, added references and discussion of invisible V decay and CMB constraints, matched published version

References in corpus (59)

• A Theory of Dark Matter
• Secluded WIMP Dark Matter
• Dark Matter Results From 54-Ton-Day Exposure of PandaX-II Experiment
• Inelastic Dark Matter
• First results from the CRESST-III low-mass dark matter program
• CMB Constraints on WIMP Annihilation: Energy Absorption During the Recombination Epoch
• Physics reach of the XENON1T dark matter experiment
• Exciting Dark Matter and the INTEGRAL/SPI 511 keV signal
• Search for a new gauge boson in the $A^{\prime }$ Experiment (APEX)
• Projected Sensitivity of the SuperCDMS SNOLAB experiment
• A Lower Bound on the Mass of Cold Thermal Dark Matter from Planck
• Strong Constraints on Sub-GeV Dark Matter from SLAC Beam Dump E137
• The Status of Inelastic Dark Matter
• Search for light massive gauge bosons as an explanation of the $(g-2{)}_{\mu }$ anomaly at MAMI
• Kinetic Mixing as the Origin of Light Dark Scales
• Inelastic Dark Matter in Light of DAMA/LIBRA
• Accelerating the Discovery of Light Dark Matter
• Sneutrino Cold Dark Matter With Lepton-Number Violation
• First results from the NEWS-G direct dark matter search experiment at the LSM
• On the relation between Migdal effect and dark matter-electron scattering in isolated atoms and semiconductors
• Candidates for Inelastic Dark Matter
• Direct Detection of Multi-component Secluded WIMPs
• Cosmological Constraints on Very Dark Photons
• BBN And The CMB Constrain Light, Electromagnetically Coupled WIMPs
• Composite Inelastic Dark Matter
• Exothermic Dark Matter
• Interpreting Dark Matter Direct Detection Independently of the Local Velocity and Density Distribution
• Co-SIMP Miracle
• Boosted Dark Matter Interpretation of the XENON1T Excess
• XENON1T excess from anomaly-free ALP dark matter and its implications for stellar cooling anomaly
• Solar axions cannot explain the XENON1T excess
• Dark Matter and the XENON1T electron recoil excess
• A Model Independent Approach to Inelastic Dark Matter Scattering
• The Inelastic Frontier: Discovering Dark Matter at High Recoil Energy
• Dark matter scattering on electrons: Accurate calculations of atomic excitations and implications for the DAMA signal
• Explaining the XENON1T excess with Luminous Dark Matter
• Inelastic Dark Matter Electron Scattering and the XENON1T Excess
• Exploring for sub-MeV Boosted Dark Matter from Xenon Electron Direct Detection
• Light new physics in XENON1T
• Neutrino self-interactions and XENON1T electron recoil excess
• A novel way to search for light dark matter in lepton beam-dump experiments
• Light vector mediators facing XENON1T data
• A New Direction in Dark-Matter Complementarity: Dark-Matter Decay as a Complementary Probe of Multi-Component Dark Sectors
• Superheavy Thermal Dark Matter and Primordial Asymmetries
• Can Nonstandard Neutrino Interactions explain the XENON1T spectral excess?
• Light dark Higgs boson in minimal sub-GeV dark matter scenarios
• XENON1T Anomaly and its Implication for Decaying Warm Dark Matter
• Dark matter detection in two easy steps
• Prospects of Migdal Effect in the Explanation of XENON1T Electron Recoil Excess
• Cosmological Constraint on Dark Photon from $N_{\mathrm{eff}}$
• Gravitational Production of Hidden Photon Dark Matter in Light of the XENON1T Excess
• Electron-interacting dark matter: Implications from DAMA/LIBRA-phase2 and prospects for liquid xenon detectors and NaI detectors
• Parity Violation in Composite Inelastic Dark Matter Models
• Shining dark matter in Xenon1T
• On-shell mediator dark matter models and the Xenon1T anomaly
• Collider Constraints on a Dark Matter Interpretation of the XENON1T Excess
• Signatures of dark Higgs boson in light fermionic dark matter scenarios
• Search for the dark photon in ${\pi }^0$ decays by the NA48/2 experiment at CERN
• Energy resolution and linearity of XENON1T in the MeV energy range

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• A Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics
• The Neutrino Magnetic Moment Portal: Cosmology, Astrophysics, and Direct Detection
• Boosted Dark Matter Interpretation of the XENON1T Excess
• Co-SIMP Miracle
• Exploring New Physics with O(keV) Electron Recoils in Direct Detection Experiments
• Direct detection of dark energy: the XENON1T excess and future prospects
• Explaining the XENON1T excess with Luminous Dark Matter
• Boosted dark matter from diffuse supernova neutrinos
• Low-mass inelastic dark matter direct detection via the Migdal effect
• XENON1T excess in local $Z_2$ DM models with light dark sector
• Muon $(g-2)$ and XENON1T Excess with Boosted Dark Matter in $L_{\mu }-L_{\tau }$ Model
• Global fits of axion-like particles to XENON1T and astrophysical data
• Hydrogen portal to exotic radioactivity
• An Active-to-Sterile Neutrino Transition Dipole Moment and the XENON1T Excess
• Self-interacting Inelastic Dark Matter in the light of XENON1T excess
• Solar Neutrino Scattering with Electron into Massive Sterile Neutrino
• Heating Neutron Stars with Inelastic Dark Matter and Relativistic Targets
• Exploring properties of long-lived particles in inelastic dark matter models at Belle II
• Shedding New Light on Sterile Neutrinos from XENON1T Experiment
• XENON1T solar axion and the Higgs boson emerging from the dark
• Spin-dependent sub-GeV Inelastic Dark Matter-electron scattering and Migdal effect: (I). Velocity Independent Operator
• Pushing the frontier of WIMPy inelastic dark matter: journey to the end of the periodic table
• Dark Matter, Muon Anomalous Magnetic Moment and the XENON1T Excess
• Constraints on electron-scattering interpretation of XENON1T excess
• XENON1T Excess: Some Possible Backgrounds
• EFT Approach of Inelastic Dark Matter for Xenon Electron Recoil Detection
• Canonical seesaw implication for two-component dark matter
• Boosted Self-Interacting Dark Matter and XENON1T Excess
• A search for rare and induced nuclear decays in hafnium
• EFT Interpretation of XENON1T Electron Recoil Excess: Neutrinos and Dark Matter
• Xenon-1T excess as a possible signal of a sub-GeV hidden sector dark matter
• Detection of Inelastic Dark Matter via Electron Recoils in SENSEI
• Solar Active-Sterile Neutrino Conversion with Atomic Effects at Dark Matter Direct Detection Experiments
• Exothermic dark mesons in light of electron recoil excess at XENON1T
• Terrestrial Probes of Electromagnetically Interacting Dark Radiation
• The Effect of Multiple Cooling Channels on the Formation of Dark Compact Objects
• Low Scale String Theory Benchmarks for Hidden Photon Dark Matter Interpretations of the XENON1T Anomaly
• Resolving XENON Excess With Decaying Cold Dark Matter
• Connecting Low scale Seesaw for Neutrino Mass to Inelastic sub-GeV Dark Matter with Abelian Gauge Symmetry
• Explaining The XENON1T Excess With Light Goldstini Dark Matter
• Explorations of pseudo-Dirac dark matter having keV splittings and interacting via transition electric and magnetic dipole moments
• Dark Fluxes from Accreting Black Holes and Direct Detections
• Stellar cooling, inelastic dark matter, and XENON
• Inelastic dark matter, small scale problems, and the XENON1T excess
• Low-Mass dark matter (in)direct detection with inelastic scattering
• Probing Light Inelastic Dark Matter from Direct Detection
• Inelastic Dark Matter at the Fermilab Short Baseline Neutrino Program
• Lepton Number Violating Electron Recoils in a $U(1{)}_{B-L}$ Model with Non-Standard Interactions
• Earth-Catalyzed Detection of Magnetic Inelastic Dark Matter with Photons in Large Underground Detectors