Rapidity distributions of net hyperons ($\Lambda - \overline{ \Lambda}$) are compared to distributions of participant protons ($p - \overline{ p}$). Strangeness production (mean multiplicities of produced $\Lambda/\Sigma^0$ hyperons and $\langle K + \overline{ K} \rangle$) in central nucleus-nucleus collisions is shown for different collision systems at different energies. An enhanced production of $\overline{ \Lambda}$ compared to $\overline{ p}$ is observed at 200 GeV per nucleon.
Categories: hep-ex