$\frac{{\rm d}\sigma_{{\rm J}/\psi \; {\rm {from}} \; {\rm B}}}{{\rm d}y}$ as a function of $y$. The error bars represent the quadratic sum of the statistical and systematic errors, while the systematic uncertainties on luminosity and branching ratio are shown as boxes. The systematic uncertainties on the extrapolation to $\pt$ = 0 are indicated by the slashed areas. The CMS values were obtained by integrating the published d$^{2}\sigma_{{\rm J}/\psi \; {\rm {from}} \; {\rm B}}$ /d$\pt$d$y$ data measured for $1.2 < \left| y \right|< 1.6$ and $1.6 < \left| y \right|< 2.4$. The results obtained in the forward region by LHCb are reflected with respect to $y = 0$ (open symbols). The FONLL calculation (and its uncertainty) is represented by solid (dashed) lines.