Spin-dependent dark matter-electron interactions

Autor: C.-P. Liu, Chih-Pan Wu, Jiunn-Wei Chen, Hsin-Chang Chi, Mukesh K. Pandey, Lakhwinder Singh, Henry T. Wong
Rok vydání: 2022
Předmět:
Zdroj: Physical Review
ISSN: 2470-0029
2470-0010
DOI: 10.1103/physrevd.106.063003
Popis: Detectors with low thresholds for electron recoil open a new window to direct searches of sub-GeV dark matter (DM) candidates. In the past decade, many strong limits on DM-electron interactions have been set, but most on the one which is spin-independent (SI) of both dark matter and electron spins. In this work, we study DM-atom scattering through a spin-dependent (SD) interaction at leading order (LO), using well-benchmarked, state-of-the-art atomic many-body calculations. Exclusion limits on the SD DM-electron cross section are derived with data taken from experiments with xenon and germanium detectors at leading sensitivities. In the DM mass range of 0.1 - 10 GeV, the best limits set by the XENON1T experiment: $\sigma_e^{\textrm{(SD)}}
Comment: Data files and README are provided in the ancillary folder
Databáze: OpenAIRE