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Absorption of light dark matter in semiconductors

Journal Article · · Physical Review D
 [1];  [2];  [2]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States). Berkeley Center for Theoretical Physics
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States). Berkeley Center for Theoretical Physics
Semiconductors are by now well-established targets for direct detection of MeV to GeV dark matter via scattering off electrons. We show that semiconductor targets can also detect significantly lighter dark matter via an absorption process. When the dark matter mass is above the band gap of the semiconductor (around an eV), absorption proceeds by excitation of an electron into the conduction band. Below the band gap, multiphonon excitations enable absorption of dark matter in the 0.01 eV to eV mass range. Energetic dark matter particles emitted from the sun can also be probed for masses below an eV. We derive the reach for absorption of a relic kinetically mixed dark photon or pseudoscalar in germanium and silicon, and show that existing direct detection results already probe new parameter space. Finally, with only a moderate exposure, low-threshold semiconductor target experiments can exceed current astrophysical and terrestrial constraints on sub-keV bosonic dark matter.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1430675
Alternate ID(s):
OSTI ID: 1341931
Journal Information:
Physical Review D, Journal Name: Physical Review D Journal Issue: 2 Vol. 95; ISSN PRVDAQ; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Searching for dark absorption with direct detection experiments journal June 2017
The cosmology of sub-MeV dark matter journal October 2017
Lightish but clumpy: scalar dark matter from inflationary fluctuations journal October 2018
Direct detection of strongly interacting sub-GeV dark matter via electron recoils journal September 2019
Vector coherent oscillation dark matter journal October 2019
Dark matter phonon coupling journal September 2019
Searching for a solar relaxion or scalar particle with XENON1T and LUX journal November 2019
Light dark matter in superfluid helium: Detection with multi-excitation production journal March 2017
Magnetic bubble chambers and sub-GeV dark matter direct detection journal May 2017
New constraints and discovery potential of sub-GeV dark matter with xenon detectors journal August 2017
New constraints and prospects for sub-GeV dark matter scattering off electrons in xenon journal August 2017
Light dark matter: Models and constraints journal December 2017
Detection of sub-MeV dark matter with three-dimensional Dirac materials journal January 2018
Solar neutrinos as a signal and background in direct-detection experiments searching for sub-GeV dark matter with electron recoils journal May 2018
Axion and hidden photon dark matter detection with multilayer optical haloscopes journal August 2018
Directional detection of light dark matter with polar materials journal December 2018
Dark photon dark matter produced by axion oscillations journal April 2019
Diamond detectors for direct detection of sub-GeV dark matter journal June 2019
First Direct-Detection Constraints on eV-Scale Hidden-Photon Dark Matter with DAMIC at SNOLAB journal April 2017
Single-Electron and Single-Photon Sensitivity with a Silicon Skipper CCD journal September 2017
Probing Sub-GeV Mass Strongly Interacting Dark Matter with a Low-Threshold Surface Experiment journal November 2017
First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector journal August 2018
SENSEI: First Direct-Detection Constraints on Sub-GeV Dark Matter from a Surface Run journal August 2018
Directly Detecting Sub-GeV Dark Matter with Electrons from Nuclear Scattering journal September 2018
SENSEI: Direct-Detection Constraints on Sub-GeV Dark Matter from a Shallow Underground Run Using a Prototype Skipper CCD journal April 2019
Detecting Sub-GeV Dark Matter with Superconducting Nanowires journal October 2019
Constraints on Light Dark Matter Particles Interacting with Electrons from DAMIC at SNOLAB journal October 2019
Relation between the Migdal Effect and Dark Matter-Electron Scattering in Isolated Atoms and Semiconductors journal January 2020
Direct detection of nuclear scattering of sub-Gev dark matter using molecular excitations journal November 2019
Resonant Absorption of Bosonic Dark Matter in Molecules journal October 2018
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SENSEI: First Direct-Detection Constraints on sub-GeV Dark Matter from a Surface Run text January 2018
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