$\pt$-differential production cross sections for prompt $\Dplus$ meson compared to pQCD calculations: FONLL , GM-VFNS(mod-$\mu_{\rm R,F}$) , GM-VFNS(SACOT-$m_{\rm T}$) , and $k_{\rm T}$-factorisation . The ratios of the data to the theoretical predictions are shown in the lower part of each panel. | ![](https://alice-publications.web.cern.ch/sites/default/files/papers/5062/DplusppCrossSecVsFONLLAndRatio-93642.png ) ![](https://alice-publications.web.cern.ch/sites/default/files/papers/5062/DplusppCrossSecVsGMVFNSAndRatio-93644.png ) ![](https://alice-publications.web.cern.ch/sites/default/files/papers/5062/DplusppCrossSecVsKtFactAndRatio-93646.png ) ![](https://alice-publications.web.cern.ch/sites/default/files/papers/5062/DplusppCrossSecVsGMVFNSsacotmtAndRatio-93648.png ) |