Detection of Inelastic Dark Matter via Electron Recoils in SENSEI

Abstract

The low-threshold experiment SENSEI, which uses the ultralow-noise silicon Skipper-CCD to explore light dark matter from the halo, has achieved the most rigorous limitations on light DM-electron scattering cross section. In this work, we investigate the inelastic DM-electron scattering process with the SENSEI data and derive the constraints on the inelastic dark matter model with a $U(1)$ gauge boson as the mediator. Comparing with elastic scattering process, we find that the down-scattering process with the mass splitting $\delta \equiv m_{{\chi }_2}-m_{{\chi }_1}<0$ is more strongly constrained while the up-scattering process $\delta >0$ gets the weaker limits. For the down-scattering process with mass splitting $\delta \sim -5$ eV, the DM mass $m_{\chi }$ can be excluded down to as low as 0.1 MeV.

4 figures, 1 table, some discussions and references added; match the published version in PRD

References in corpus (27)

• Secluded WIMP Dark Matter
• Dark Matter Results From 54-Ton-Day Exposure of PandaX-II Experiment
• The WIMPless Miracle: Dark Matter Particles without Weak-scale Masses or Weak Interactions
• Bosonic super-WIMPs as keV-scale dark matter
• Exciting Dark Matter and the INTEGRAL/SPI 511 keV signal
• On the local dark matter density
• Asymmetric Dark Matter from Leptogenesis
• SENSEI: Direct-Detection Constraints on Sub-GeV Dark Matter from a Shallow Underground Run Using a Prototype Skipper-CCD
• Detection of sub-MeV Dark Matter with Three-Dimensional Dirac Materials
• Semiconductor Probes of Light Dark Matter
• Inelastic Dark Matter in Light of DAMA/LIBRA
• Sneutrino cold dark matter, a new analysis: relic abundance and detection rates
• Probing sub-GeV Dark Matter with conventional detectors
• A Natural Supersymmetric Model with MeV Dark Matter
• Candidates for Inelastic Dark Matter
• Inelastic Dark Matter Electron Scattering and the XENON1T Excess
• Production and attenuation of cosmic-ray boosted dark matter
• Pseudo-Dirac Dark Matter Leaves a Trace
• Cosmic-ray upscattered inelastic dark matter
• A New Direction in Dark-Matter Complementarity: Dark-Matter Decay as a Complementary Probe of Multi-Component Dark Sectors
• Low-mass inelastic dark matter direct detection via the Migdal effect
• Crystal responses to general dark matter-electron interactions
• Dependence of Dark Matter - Electron Scattering on the Galactic Dark Matter Velocity Distribution
• Direct Detection of Spin-Dependent Sub-GeV Dark Matter via Migdal Effect
• The ups and downs of inelastic dark matter: Electron recoils from terrestrial upscattering
• Pushing the frontier of WIMPy inelastic dark matter: journey to the end of the periodic table
• Heavy long-lived coannihilation partner from inelastic Dark Matter model and its signatures at the LHC

Cited by in corpus (5)

• Heating Neutron Stars with Inelastic Dark Matter and Relativistic Targets
• Spin-dependent sub-GeV Inelastic Dark Matter-electron scattering and Migdal effect: (I). Velocity Independent Operator
• An Improved Bound on Accelerated Light Dark Matter
• Cosmic-Ray Cooling in Active Galactic Nuclei as a New Probe of Inelastic Dark Matter
• Earth-Catalyzed Detection of Magnetic Inelastic Dark Matter with Photons in Large Underground Detectors