\pt-differential \psis-to-\jpsi production cross section ratio at midrapidity in \pp collisions at \thirteen compared with a measurement at forward rapidity in \pp collisions at the same collision energy  (left), and compared with the model calculations  (right) The error bars indicate the statistical uncertainties, and the boxes indicate the systematic uncertainties. The data points are plotted at the effective \pt values evaluated according to the Lafferty-Wyatt prescription  The widths of the bands reflect the theoretical uncertainties.