chose $W_{1}=7$ TeV as the reference energy.

In Fig. \[fig:rpT\] we plot ratios $R_{7/0.9}$ and $R_{7/2.76}$ as functions of scaling variable $\sqrt{\tau}=\sqrt{\tau_{p_{\rm T}}}$ (\[taupdef\]) for different choices of exponent $\lambda$ entering the definition of the saturation scale $Q_{\mathrm{s}}$ (\[Qsdef\]). We see that for $\lambda=0$ when $\sqrt
{\tau_{p_{\rm T}}}=p_{\mathrm{T}}/Q_{0}$ ratios are substantially larger than 1 and grow with $p_{\mathrm{T}}$. When $\lambda$ is increased the ratios get smaller and flatter. One can see that the optimal value of exponent $\lambda$ is somewhere between 0.2 and 0.27. This value is a bit smaller than the value $\lambda=0.27$ obtained in the analysis of unidentified NSD spectra measured by the CMS collaboration at the LHC [@McLerran:2010ex]. We can see that there is a dip in these ratios around $\sqrt{\tau} \sim 1$ which is especially pronounced for pions. Finally, let us remark that we plot $R_{W_{1}/W_{2}}$ only up to $\sqrt{\tau}=6$; we shall see that for larger values of $\sqrt{\tau}$ the ratios get larger than 1 and start growing with $\sqrt{\tau}$. Hence we conclude that there is a window of GS delimited from below by nonperturbative physics and from above by perturbative production of particles with high transverse momentum [@Praszalowicz:2013uu].

Although one can conclude from Fig. 1 