Universility of hadron jets in soft and hard particle interactions at high energies

Hadron jet production is studied in softπ ^? p and cumulativeπ ^? C interactions at a 40 GeV/c momentum. The collective characteristics of jets and the form of the quark and diquark fragmentation into charted poins and neutral strange particles are analyzed. The results obtained are compared to analogous data fore ⁺ e ^? andv(≈v)p interactions. The hadron jet properties are also studied by means of relativistic invariant variables—the squared relative 4-velocities (b_{ik} = - left( {frac{{P_i }}{{m_i }} - frac{{P_k }}{{m_k }}} right)^2 ) . The results obtained show that quark (diquark) fragmentation proceeds in a similar manner in soft hadron-hadron collisions, cumulative interactions on light nuclei,e ⁺ e ^? annihilation and deep inelasticv(≈v)p scattering. In the relativistically invariant variables the fragmentation function is similar for the hadronization of quarks and diquarks and it does not matter whether they are knocked out of usual hadrons or multiquark systems.