Describing the Migdal effect with a bremsstrahlung-like process and many-body effects

Abstract

Recent theoretical studies have suggested that the suddenly recoiled atom struck by dark matter (DM) particle is much more likely to excite or lose its electrons than expected. Such Migdal effect provides a new avenue for exploring the sub-GeV DM particles. There have been various attempts to describe the Migdal effect in liquids and semiconductor targets. In this paper we incorporate the treatment of the bremsstrahlung process and the electronic many-body effects to give a full description of the Migdal effect in bulk semiconductor targets diamond and silicon. Compared with the results obtained with the atom-centered localized Wannier functions (WFs) under the framework of the tight-binding (TB) approximation, the method proposed in this study yields much larger event rates in the low energy regime, due to a ${\omega }^{-4}$ scaling. We also find that the effect of the bremsstrahlung photon mediating the Coulomb interaction between recoiled ion and the electron-hole pair is equivalent to that of the exchange of a single phonon.

arXiv commentmatches the published version;the contributions of off-diagonal terms in the ELFs are included

References in corpus (52)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Yambo: an \textit{ab initio} tool for excited state calculations
• Direct Detection of Sub-GeV Dark Matter
• Many-body perturbation theory calculations using the yambo code
• First Direct Detection Limits on sub-GeV Dark Matter from XENON10
• New Constraints and Prospects for sub-GeV Dark Matter Scattering off Electrons in Xenon
• Migdal Effect in Dark Matter Direct Detection Experiments
• Search for Light Dark Matter Interactions Enhanced by the Migdal effect or Bremsstrahlung in XENON1T
• Superconducting Detectors for Super Light Dark Matter
• Detection of sub-MeV Dark Matter with Three-Dimensional Dirac Materials
• Detecting Superlight Dark Matter with Fermi-Degenerate Materials
• Semiconductor Probes of Light Dark Matter
• Detection of Light Dark Matter With Optical Phonons in Polar Materials
• Absorption of light dark matter in semiconductors
• Directional Detection of Dark Matter with Two-Dimensional Targets
• Searching for Dark Absorption with Direct Detection Experiments
• Direct Detection of sub-GeV Dark Matter with Scintillating Targets
• Detecting Ultralight Bosonic Dark Matter via Absorption in Superconductors
• Probing sub-GeV Dark Matter with conventional detectors
• Directional Detection of Light Dark Matter with Polar Materials
• Directly detecting sub-GeV dark matter with electrons from nuclear scattering
• On the relation between Migdal effect and dark matter-electron scattering in isolated atoms and semiconductors
• Modulation Effects in Dark Matter-Electron Scattering Experiments
• Constraints on Spin-Independent Nucleus Scattering with sub-GeV Weakly Interacting Massive Particle Dark Matter from the CDEX-1B Experiment at the China Jin-Ping Laboratory
• Light Dark Matter in Superfluid Helium: Detection with Multi-excitation Production
• Diamond Detectors for Direct Detection of Sub-GeV Dark Matter
• Atomic responses to general dark matter-electron interactions
• Electron Ionization via Dark Matter-Electron Scattering and the Migdal Effect
• Multi-Channel Direct Detection of Light Dark Matter: Theoretical Framework
• Dirac Materials for Sub-MeV Dark Matter Detection: New Targets and Improved Formalism
• SiC Detectors for Sub-GeV Dark Matter
• Direct Detection of Light Dark Matter and Solar Neutrinos via Color Center Production in Crystals
• The Migdal effect in semiconductors
• The Migdal Effect and Photon Bremsstrahlung in effective field theories of dark matter direct detection and coherent elastic neutrino-nucleus scattering
• Sub-GeV Dark Matter Detection with Electron Recoils in Carbon Nanotubes
• Detecting Light Dark Matter with Magnons
• Resonant absorption of bosonic dark matter in molecules
• Directional Dark Matter Detection in Anisotropic Dirac Materials
• Detection of sub-GeV Dark Matter and Solar Neutrinos via Chemical-Bond Breaking
• Effective Field Theory of Dark Matter Direct Detection With Collective Excitations
• A Dark Matter Interpretation of Excesses in Multiple Direct Detection Experiments
• Migdal effect and photon Bremsstrahlung: improving the sensitivity to light dark matter of liquid argon experiments
• Multiphonon excitations from dark matter scattering in crystals
• Sub-MeV Dark Matter and the Goldstone Modes of Superfluid Helium
• Directional Sensitivity In Light-Mass Dark Matter Searches With Single-Electron Resolution Ionization Detectors
• Model-independent determination of the Migdal effect via photoabsorption
• Plasmon production from dark matter scattering
• Dark Matter, Dark Photon and Superfluid He-4 from Effective Field Theory
• Describing Migdal effects in diamond crystal with atom-centered localized Wannier functions
• Projected sensitivity to sub-GeV dark matter of next-generation semiconductor detectors
• Velocity Dependent Dark Matter Interactions in Single-Electron Resolution Semiconductor Detectors with Directional Sensitivity
• The wavefunction reconstruction effects in calculation of DM-induced electronic transition in semiconductor targets

Cited by in corpus (21)

• DarkELF: A python package for dark matter scattering in dielectric targets
• Searches for light dark matter using condensed matter systems
• Directional recoil detection
• Precise predictions and new insights for atomic ionisation from the Migdal effect
• Direct Detection of Spin-Dependent Sub-GeV Dark Matter via Migdal Effect
• Dark matter direct detection from the single phonon to the nuclear recoil regime
• The Migdal Effect in Semiconductors for Dark Matter with Masses below $\sim$100 MeV
• The Molecular Migdal Effect
• Constraints on Dark Matter-Electron Scattering from Molecular Cloud Ionization
• Measuring the Migdal effect in semiconductors for dark matter detection
• Phonon-mediated Migdal effect in semiconductor detectors
• An Improved Bound on Accelerated Light Dark Matter
• Dark Matter Direct Detection with Quantum Dots
• In-medium screening effects for the Galactic halo and solar-reflected dark matter detection in semiconductor targets
• Exploring light dark matter with the Migdal effect in hydrogen-doped liquid xenon
• Can sub-GeV dark matter coherently scatter on the electrons in the Atom?
• Measuring the molecular Migdal effect with neutron scattering on diatomic gases
• Nuclear and electron scattering by neutrinos and dark matter in condensed systems
• Probing levitodynamics with multi-stochastic forces and the simple applications on the dark matter detection in optical levitation experiment
• The Migdal effect in solid crystals and the role of non-adiabaticity
• Comparison of the Migdal transition probabilities in electron-atom inelastic cross sections