Matter, antimatter and dark matter, and the origin of antinuclei in cosmic rays

Abstract:
There may exist B-L violating interactions which can be at the origin of baryon asymmetry both in the visible and dark sectors in the early universe, and they can also induce the mixing phenomena of the neutral ordinary particles with dark particles. I discuss how such interactions can produce antinuclei in the present universe. In fact, AMS-2 experiment has detected eight antihelium candidates and can be explained by this  mechanism  which also suggests that the heavier antinuclei as anticarbon or antioxygen may also exist in cosmic rays.