Speaker
Felix Kahlhoefer
(Karlsruhe Institute of Technology)
Description
I will present novel ideas to search for the scattering of dark matter particles with mass below the GeV scale using superfluid helium detectors. First, I will introduce the upcoming DELight experiment, which will use magnetic microcalorimeters to detect photons and collective excitations produced by dark matter scattering. The sensitivity of such a search can be extended further by considering electron excitations induced by nuclear scattering via the so-called Migdal effect. Finally, I will discuss the effective field theory relevant for even lighter particles (below the MeV scale) and how sensitivity may be extended into this regime using optomechanical cavities and single-photon detection.
Author
Felix Kahlhoefer
(Karlsruhe Institute of Technology)