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Title: Direct detection of sub-GeV dark matter with semiconductor targets

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [1];  [2];  [1];  [3];  [1]
  1. Stony Brook Univ., Stony Brook, NY (United States)
  2. Stanford Univ., Stanford, CA (United States)
  3. Tel-Aviv Univ., Tel-Aviv (Israel)

Dark matter in the sub-GeV mass range is a theoretically motivated but largely unexplored paradigm. Such light masses are out of reach for conventional nuclear recoil direct detection experiments, but may be detected through the small ionization signals caused by dark matter-electron scattering. Semiconductors are well-studied and are particularly promising target materials because their O(1 eV) band gaps allow for ionization signals from dark matter particles as light as a few hundred keV. Current direct detection technologies are being adapted for dark matter-electron scattering. In this paper, we provide the theoretical calculations for dark matter-electron scattering rate in semiconductors, overcoming several complications that stem from the many-body nature of the problem. We use density functional theory to numerically calculate the rates for dark matter-electron scattering in silicon and germanium, and estimate the sensitivity for upcoming experiments such as DAMIC and SuperCDMS. We find that the reach for these upcoming experiments has the potential to be orders of magnitude beyond current direct detection constraints and that sub-GeV dark matter has a sizable modulation signal. We also give the first direct detection limits on sub-GeV dark matter from its scattering off electrons in a semiconductor target (silicon) based on published results from DAMIC. We make available publicly our code, QEdark, with which we calculate our results. Our results can be used by experimental collaborations to calculate their own sensitivities based on their specific setup. In conclusion, the searches we propose will probe vast new regions of unexplored dark matter model and parameter space.

Research Organization:
State Univ. of New York (SUNY), Albany, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0008061
OSTI ID:
1326952
Journal Information:
Journal of High Energy Physics (Online), Vol. 2016, Issue 5; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 233 works
Citation information provided by
Web of Science

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Cited By (36)

MeV dark matter: model independent bounds journal September 2017
Cryogenic scintillation properties of n -type GaAs for the direct detection of MeV/c 2 dark matter journal March 2018
FIMP dark matter freeze-in gauge mediation and hidden sector journal May 2018
Prospects for indirect dark matter searches with MeV photons journal May 2017
Direct detection of strongly interacting sub-GeV dark matter via electron recoils journal September 2019
Refined bounds on MeV-scale thermal dark sectors from BBN and the CMB journal January 2020
Reviving millicharged dark matter for 21-cm cosmology journal December 2019
Testing light dark matter coannihilation with fixed-target experiments journal September 2017
Phenomenology of self-interacting dark matter in a matter-dominated universe journal January 2019
Direct detection of axion-like particles in Bismuth-based topological insulators journal August 2018
Directly Detecting Sub-GeV Dark Matter with Electrons from Nuclear Scattering text January 2018
Dirac materials for sub-MeV dark matter detection: New targets and improved formalism text January 2020
Directly Detecting MeV-Scale Dark Matter Via Solar Reflection journal April 2018
Sub-GeV dark matter in superfluid He-4: an effective theory approach journal June 2019
Detecting Ultralight Bosonic Dark Matter via Absorption in Superconductors text January 2016
Absorption of light dark matter in semiconductors text January 2016
Light Dark Matter in Superfluid Helium: Detection with Multi-excitation Production text January 2016
Magnetic Bubble Chambers and Sub-GeV Dark Matter Direct Detection text January 2017
New constraints and discovery potential of sub-GeV dark matter with xenon detectors text January 2017
Prospects for indirect dark matter searches with MeV photons text January 2017
The Dawn of FIMP Dark Matter: A Review of Models and Constraints text January 2017
Impact of Resonance on Thermal Targets for Invisible Dark Photon Searches text January 2017
Migdal Effect in Dark Matter Direct Detection Experiments text January 2017
Directly Detecting MeV-scale Dark Matter via Solar Reflection text January 2017
FIMP Dark Matter Freeze-in Gauge Mediation and Hidden Sector text January 2017
Cosmology and Accelerator Tests of Strongly Interacting Dark Matter text January 2018
Kinetic Mixing, Dark Photons and an Extra Dimension: I text January 2018
Phenomenology of Self-Interacting Dark Matter in a Matter-Dominated Universe text January 2018
SENSEI: First Direct-Detection Constraints on sub-GeV Dark Matter from a Surface Run text January 2018
First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector text January 2018
Sub-GeV Dark Matter in Superfluid He-4: an Effective Theory Approach text January 2019
Making dark matter out of light: freeze-in from plasma effects text January 2019
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Sub-MeV Dark Matter and the Goldstone Modes of Superfluid Helium text January 2019
On the relation between Migdal effect and dark matter-electron scattering in isolated atoms and semiconductors text January 2019
Dirac Materials for Sub-MeV Dark Matter Detection: New Targets and Improved Formalism text January 2019

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