Measurement of $^3\overline {He}$ absorption cross-section with ALICE

The measurement of cosmic antinuclei may reveal exotic physics processes such as dark matter annihilation. In this context, $^3\overline {He}$ is one of the most promising probes for these studies, which in particular require precision knowledge of the interaction of these particles with matter. At the CERN LHC, $^3$He nuclei are produced as well as their antimatter particles ($^3\overline {He}$) in high-energy nucleus-nucleus collisions, which allows for the study of their interaction with the detector material. In this article, first results on the $^3\overline {He}$ absorption cross-section, obtained with the ALICE detector, are presented.