Earth Shielding and Daily Modulation from Electrophilic Boosted Dark Particles

Abstract

Boosted dark particles of astrophysical origin can lead to nonstandard nuclear or electron recoil signals in direct detection experiments. %It has been shown that this interpretation successfully explains the excess of keV electron recoil events recently observed by the XENON1T experiment, and that a daily modulation of the signal in the detector is expected. We conduct an investigation of the daily modulation feature of a potential future signal of this type. In particular, we perform simulations of the dark particle interactions with electrons in atoms building up the Earth on its path to the detector, and provide in-depth predictions for the expected daily changes in the signal for various direct detection experiments, including XENONnT, PandaX, and LUX-ZEPLIN.

15 pages, 12 figures. published version in PRD. For the code to calculate the atomic ionization form factor, see https://github.com/XueXiao-Physics/AtomIonCalc (AtomIonCalc) . For the Monte Carlo simulation of the electrophilic dark particles traveling inside the earth, see https://github.com/XueXiao-Physics/realEarthScatterDM (realEarthScatterDM). v4: location of detectors corrected

References in corpus (8)

• Search for New Physics in Electronic Recoil Data from XENONnT
• Constraining the Spin-Dependent WIMP-Nucleon Cross Sections with XENON1T
• (In)direct Detection of Boosted Dark Matter
• Boosted Dark Matter in IceCube and at the Galactic Center
• Detecting Boosted Dark Matter from the Sun with Large Volume Neutrino Detectors
• Signatures of Earth-scattering in the direct detection of Dark Matter
• Daily Modulation as a Smoking Gun of Dark Matter with Significant Stopping
• Monochromatic dark neutrinos and boosted dark matter in noble liquid direct detection

Cited by in corpus (8)

• An Analytic Approach to Light Dark Matter Propagation
• Constraints on new physics around the MeV scale with cosmological observations
• Accelerated Light Dark Matter-Earth Inelastic Scattering in Direct Detection
• Black Holes as Fermion Factories
• Search for Cosmic-ray Boosted Sub-MeV Dark-Matter-Electron Scattering in PandaX-4T
• Boosted Dark Matter From Centaurus A and Its Detection
• Attenuation of Cosmic Ray Electron Boosted Dark Matter
• Cavity as Radio Telescope for Galactic Dark Photon