Constraints from a many-body method on spin-independent dark matter scattering off electrons using data from germanium and xenon detectors
| Autor: | Mukesh K. Pandey, Lakhwinder Singh, Hsin-Chang Chi, C.-P. Liu, Chih-Pan Wu, Chung-Chun Hsieh, Henry T. Wong, Jiunn-Wei Chen |
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| Rok vydání: | 2020 |
| Předmět: |
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 |
| Zdroj: | Physical Review |
| ISSN: | 2470-0029 2470-0010 |
| DOI: | 10.1103/physrevd.102.123025 |
| Popis: | 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. 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 |
| Databáze: | OpenAIRE |
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