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Title: Direct Detection of Sub-GeV Dark Matter

Direct Detection of Sub-GeV Dark Matter Direct detection strategies are proposed for dark matter particles with MeV to GeV mass. In this largely unexplored mass range, dark matter scattering with electrons can cause single-electron ionization signals, which are detectable with current technology. Ultraviolet photons, individual ions, and heat are interesting alternative signals. Focusing on ionization, we calculate the expected dark matter scattering rates and estimate the sensitivity of possible experiments. Backgrounds that may be relevant are discussed. Theoretically interesting models can be probed with existing technologies, and may even be within reach using ongoing direct detection experiments. Significant improvements in sensitivity should be possible with dedicated experiments, opening up a window to new regions in dark matter parameter space.
Authors: ; ;
Publication Date:
OSTI Identifier:OSTI ID: 1036970
Report Number(s):SLAC-PUB-14538
arXiv:1108.5383; TRN: US1201508
DOE Contract Number:AC02-76SF00515
Resource Type:Journal Article
Resource Relation:Journal Name: Submitted to Physical Review
Research Org:SLAC National Accelerator Laboratory (SLAC)
Sponsoring Org:USDOE
Country of Publication:United States
Language:English
Subject: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DETECTION; ELECTRONS; FOCUSING; IONIZATION; NONLUMINOUS MATTER; OPENINGS; PHOTONS; SCATTERING; SENSITIVITY Astrophysics, Phenomenology-HEP,HEPPH, HEPEX, ASTRO