EFT Interpretation of XENON1T Electron Recoil Excess: Neutrinos and Dark Matter

Abstract

We scrutinize the XENON1T electron recoil excess in the scalar-singlet-extended dark matter effective field theory. We confront it with various astrophysical and laboratory constraints both in a general setup and in the more specific, recently proposed, variant with leptophilic $Z_2$-odd mediators. The latter also provide mass to the light leptons via suppressed $Z_2$ breaking, a structure that is well fitting with the nature of the observed excess and the discrete symmetry leads to non-standard dark-matter interactions. We find that the excess can be explained by neutrino--electron interactions, linked with the neutrino and electron masses, while dark-matter--electron scattering does not lead to statistically significant improvement. We analyze the parameter space preferred by the anomaly and find severe constraints that can only be avoided in certain corners of parameter space. Potentially problematic bounds on electron couplings from Big-Bang Nucleosynthesis can be circumvented via a late phase transition in the new scalar sector.

11 pages, 7 figures; v2: matches version published in PRD

References in corpus (35)

• Beyond the Cosmological Standard Model
• Excess Electronic Recoil Events in XENON1T
• Light Dark Matter: Models and Constraints
• Stellar cooling bounds on new light particles: plasma mixing effects
• Axion and neutrino bounds improved with new calibrations of the tip of the red-giant branch using geometric distance determinations
• Limiting neutrino magnetic moments with Borexino Phase-II solar neutrino data
• Grand Unified Neutrino Spectrum at Earth: Sources and Spectral Components
• First observation of two-neutrino double electron capture in ${}^{124}$Xe with XENON1T
• 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
• Exploring the robustness of stellar cooling constraints on light particles
• Re-examining the Solar Axion Explanation for the XENON1T Excess
• Electroweak phase transition with spontaneous $Z_2$-breaking
• The Fermionic Dark Matter Higgs Portal: an effective field theory approach
• Atmospheric Dark Matter and Xenon1T Excess
• Large Neutrino Magnetic Moments in the Light of Recent Experiments
• Explaining the XENON1T excess with Luminous Dark Matter
• Inelastic Dark Matter Electron Scattering and the XENON1T Excess
• Leptonic New Force and Cosmic-ray Boosted Dark Matter for the XENON1T Excess
• Light new physics in XENON1T
• Neutrino self-interactions and XENON1T electron recoil excess
• Electric But Not Eclectic: Thermal Relic Dark Matter for the XENON1T Excess
• Light vector mediators facing XENON1T data
• Can Nonstandard Neutrino Interactions explain the XENON1T spectral excess?
• XENON1T signal from transition neutrino magnetic moments
• Dark Matter $Z^{\prime }$ and XENON1T Excess from $U(1{)}_X$ Extended Standard Model
• XENON1T excess in local $Z_2$ DM models with light dark sector
• Hidden Photon Dark Matter in the Light of XENON1T and Stellar Cooling
• Hydrogen portal to exotic radioactivity
• XENON1T Anomaly: A Light $Z^{\prime }$
• Solar Neutrino Scattering with Electron into Massive Sterile Neutrino
• XENON1T solar axion and the Higgs boson emerging from the dark
• Model-independent constraints with extended dark matter EFT

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• Canonical seesaw implication for two-component dark matter
• Xenon-1T excess as a possible signal of a sub-GeV hidden sector dark matter
• Terrestrial Probes of Electromagnetically Interacting Dark Radiation
• GeV Scale Inelastic Dark Matter with Dark Photon Mediator via Direct Detection and Cosmological/Laboratory Constraints
• Low Scale String Theory Benchmarks for Hidden Photon Dark Matter Interpretations of the XENON1T Anomaly
• 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