Status of cosmic-ray antinuclei searches

The precise measurement of cosmic-ray antinuclei serves as an important means for identifying the nature of dark matter and other beyond-standard-model physics. Recent years showed that identifying the nature of dark matter with cosmic-ray positrons and antiprotons is difficult, and has led to a significantly increased interest in cosmic-ray antideuteron and antihelium searches. Antideuterons and antihelium nuclei may also be generated in dark matter annihilations or decays, offering a potential breakthrough in unexplored phase space for dark matter. This presentation discusses the current status, perspectives, and challenges for cosmic-ray antinuclei searches. It will review the motivation for antinuclei searches, discuss the theoretical and experimental uncertainties of antinuclei production and propagation in our Galaxy, as well as summarize the experimental status.