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Title: Searching for dark absorption with direct detection experiments

We consider the absorption by bound electrons of dark matter in the form of dark photons and axion-like particles, as well as of dark photons from the Sun, in current and next-generation direct detection experiments. Experiments sensitive to electron recoils can detect such particles with masses between a few eV to more than 10 keV. For dark photon dark matter, we update a previous bound based on XENON10 data and derive new bounds based on data from XENON100 and CDMSlite. We find these experiments to disfavor previously allowed parameter space. Moreover, we derive sensitivity projections for SuperCDMS at SNOLAB for silicon and germanium targets, as well as for various possible experiments with scintillating targets (cesium iodide, sodium iodide, and gallium arsenide). The projected sensitivity can probe large new regions of parameter space. For axion-like particles, the same current direction detection data improves on previously known direct-detection constraints but does not bound new parameter space beyond known stellar cooling bounds. However, projected sensitivities of the upcoming SuperCDMS SNOLAB using germanium can go beyond these and even probe parameter space consistent with possible hints from the white dwarf luminosity function. We find similar results for dark photons from the sun. For allmore » cases, direct-detection experiments can have unprecedented sensitivity to dark-sector particles.« less
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [2]
  1. Tel Aviv Univ., Tel Aviv (Israel). Raymond and Beverly Sackler School of Physics and Astronomy
  2. Stony Brook Univ., NY (United States). C.N. Yang Institute for Theoretical Physics
  3. Tel Aviv Univ., Tel Aviv (Israel). Raymond and Beverly Sackler School of Physics and Astronomy ; Weizmann Inst. of Science, Rehovot (Israel). Department of Particle Physics and Astrophysics
Publication Date:
Grant/Contract Number:
SC0008061
Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2017; Journal Issue: 6; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Research Org:
New York Univ. (NYU), NY (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Dark matter; Dark matter and Double Beta Decay (experiments)
OSTI Identifier:
1426146