that GS works reasonably well for standard scaling variable $\tau_{p_{\rm T}}$ (\[taupdef\]), we are going to examine now the hypothesis that the proper scaling variable for identified particles is $\tau_{\tilde{m}_{\rm T}}$ of Eq. (\[taumtdef\]). To this end in Fig. \[ratiosmT\] we plot again ratios $R_{7/0.9}$ and $R_{7/2.76}$ for four different choices of exponent $\lambda$ as functions of scaling variable $\sqrt{\tau_{\tilde{m}_{\rm T}}}$. We see that the dip for small values of $\tau$ has basically disappeared for kaons and protons and has been largely reduced for pions. Moreover, good quality GS scaling has been achieved for larger value of exponent $\lambda\sim 0.27 - 0.3$ in fair agreement with analysis of DIS [@Praszalowicz:2012zh]. In order to quantify this statement one has to wait, however, until lower energy data is published for larger $p_{\mathrm{T}}$ range similar to the one at $W_{1}=7$ TeV.

![Illustration of geometrical scaling in scaling variable $\tau_{\tilde{m}_{\rm T}}$. Multiplicity ratios $R_{W_{1}/W_{2}}$ for $W_{1}=7$ TeV are plotted as functions of scaling variable $\tau_{\tilde{m_{\rm T}}}$ for pions (red triangles: “up” for $W_{2}
=2.76$ TeV, “down” for $W_{2}=0.9$ TeV) kaons (blue triangles: “right” for $W_{2} =2.76$ TeV, “left” for $W_{2}=0.9$ TeV) and protons (back circles for $W_{2} =2.76$ TeV and black squares $W_{2}=0.9$ TeV) 