A novel scenario for the production of antihyperons in relativistic heavy ion collisions

We elaborate on our recent suggestion on antihyperon production in relativistic heavy ion collisions by means of multi-mesonic (fusion-type) reactions. It will be shown that the (rare) antihyperons are driven towards chemical equilibrium with pions, nucleons and kaons on a timescale of 1–3 fm/c in a still moderately baryon-dense hadronic environment.