Speaker
Description
Diffuse neutrinos from past supernovae in the Universe present
us with a unique opportunity to test dark matter (DM) interactions.
These neutrinos can scatter and boost the DM particles in the Milky Way
halo to relativistic energies allowing us to detect them in terrestrial
laboratories. In this talk, I will discuss how the consideration of
energy-dependent cross-sections for DM interactions can significantly
affect constraints previously derived under the assumption of constant
cross-sections, modifying them by multiple orders of magnitude. I will
focus on generic models of DM-neutrino and electron interactions,
mediated by a vector or a scalar boson, and discuss new limits obtained
on DM-neutrino and electron interactions for DM with masses in the range
$\sim (0.1, 10^4)$~MeV, using recent data from XENONnT, LUX-ZEPLIN, and
PandaX-4T direct detection experiments.
