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Constraints from a many-body method on spin-independent dark matter scattering off electrons using data from germanium and xenon detectors
- Source :
- Physical Review
- Publication Year :
- 2020
- Publisher :
- American Physical Society (APS), 2020.
-
Abstract
- Scattering of light dark matter (LDM) particles with atomic electrons is studied in the context of effective field theory. Contact and long-range interactions between dark matter and an electron are both considered. A state-of-the-art many-body method is used to evaluate the spin-independent atomic ionization cross sections of LDM-electron scattering, with an estimated error about 20%. New upper limits are derived on parameter space spanned by LDM mass and effective coupling strengths using data from the CDMSlite, XENON10, XENON100, and XENON1T experiments. Comparison with existing calculations shows the importance of atomic structure. Two aspects particularly important are relativistic effect for inner-shell ionization and final-state free electron wave function which sensitively depends on the underlying atomic approaches.<br />Comment: Update to the final publication version, largely expanded with new data analyzed and improved physics discussions. Data files and README are provided in the ancillary folder
- Subjects :
- Free electron model
Physics
010308 nuclear & particles physics
Scattering
Dark matter
FOS: Physical sciences
Electron
01 natural sciences
Light scattering
High Energy Physics - Experiment
High Energy Physics - Phenomenology
High Energy Physics - Experiment (hep-ex)
High Energy Physics - Phenomenology (hep-ph)
Ionization
0103 physical sciences
Effective field theory
Atomic physics
010306 general physics
Relativistic quantum chemistry
Subjects
Details
- ISSN :
- 24700029 and 24700010
- Volume :
- 102
- Database :
- OpenAIRE
- Journal :
- Physical Review D
- Accession number :
- edsair.doi.dedup.....4bb0141ba802e2c5f3ad2598e642b236
- Full Text :
- https://doi.org/10.1103/physrevd.102.123025