Universal anti-baryon density in $e^{+}{e}^{-}$,$\gamma p$, pp, pA and AA collisions

Haidong Liu, Zhangbu Xu

We compiled the systematical measurements of anti-nucleus production in ultra-relativistic heavy ion collisions as well as those in $pp$, $p\bar{p}$, $\gamma p$ and $e^{+}{e}^{-}$ at vario…