d$\sigma_{\rm b \bar{b}}$/d$y$ at mid rapidity as a function of $\sqrt{s}$ in pp (PHENIX[47] and ALICE results) and ${\rm p\bar{p}}$ (UA1 [16] and CDF [17] results) collisions. The FONLL calculation [41][42] (and its uncertainty) is represented by solid (dashed) lines. |