do not overlap (or have very small overlap) in $p_{\rm T}$. It can be, however, seen “by eye” that the $\tilde{m}_{\rm T}$-scaling works better for identified particles than the “standard” $p_{\rm T}$-scaling. Moreover, the optimal value of the exponent $\lambda$ is definitely closer to the DIS value of 0.32 than in the case of the $p_{\rm T}$-scaling for (unidentified) charged particles where it is equal to 0.27 [@McLerran:2010ex]. This statements can be quantified using the [*method of ratios*]{} [@Praszalowicz:2012zh] once data in the full $p_{\rm T}$ range is published.

One of the immediate consequences of geometrical scaling in variable $\tau_{\tilde{m}_{\rm T}}$ is power-like growth of multiplicity and average transverse momentum with scattering energy $W$. We have shown in Refs. [@McLerran:2010ex] that the values of the pertinent exponents for (unidentified) charge particles are in agreement with experimental fits. In the present work we have shown that the coefficients of this growth and possible constant terms are calculable in terms of the universal scaling function $F(\tau)$ (\[abalpha\],\[calpha\]). From Eqs. (\[dNdy\]) and (\[meanpt1\]) one can in principle determine constants $a_{\alpha}$, $b_{\alpha}$ and $c_{\alpha}$ once the pertinent data is available.

We have also made an attempt to predict constants $a_{\alpha}$, $b_{\alpha}$ and $c_{\alpha}$ assuming 