  We investigate the inelastic signatures of dark matter-nucleus interactions,
explicitly focusing on the ramifications of polarization, dark matter
splitting, and the Migdal effect. Direct detection experiments, crucial for
testing the existence of dark matter, encounter formidable obstacles such as
indomitable neutrino backgrounds and the elusive determination of dark matter
spin. To overcome these challenges, we explore the potential of
polarized-target dark matter scattering, examining the impact of nonvanishing
mass splitting and the role of the Migdal effect in detecting light dark
matter. Our analysis demonstrates the valuable utility of the polarized
triple-differential event rate as an effective tool for studying inelastic dark
matter. It enables us to investigate both angular and energy dependencies,
providing valuable insights into the scattering process.
