Speaker
Description
Direct searches of sub-GeV light dark matter (LDM) in our galaxy
through its interactions with electrons has been a rapidly-growing
area. As the kinetic energy of such a LDM particle is generally below
keV, its scattering triggers sub-keV electronic recoils in detectors,
and a proper understanding of these events usually requires reliable
many-body theory inputs.
In this talk, we present a comprehensive data set of atomic response
functions for xenon and germanium with 12.2 and 80 eV energy
thresholds, respectively. Our approach, the multiconfiguration
relativistic random phase approximation, takes into account the
relativistic, exchange, and correlation effects in one self-consistent
framework; and is benchmarked by photoabsorption data from thresholds
to 30 keV with errors less than 5%. The significance of these effects
and the importance of the benchmark will be discussed.
| Collaboration you are representing | TDMC |
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