Indication of asymptotic scaling in the reactions $dd\to p^3$H, $dd\to n^3$He and $dp\to dp$

It is shown that the differential cross sections of the reactions $dd\to ^3He n$and$dd\to ^3H p$measuredatc\mathrm{.}m\mathrm{.}s\mathrm{.}scatteringangle$\theta_{cm}=60^\circ$ in the interval of the deuteron beam energy 0.5 - 1.2 GeV demonstrate the scaling behaviour,$d\sigma \mathrm{/}dt\sim s^{-22}$, which follows from constituent quark counting rules. It is found also that the differential cross section of the elastic $dp\to dp$ scattering at ${\theta }_{cm}={125}^{\circ }-{135}^{\circ }$ follows the scaling regime $\sim s^{-16}$ at beam energies 0.5 - 5 GeV. These data are parameterized here using the Reggeon exchange.