Ultra-high energy interaction on accelerators and in cosmic rays

The violations of Feinman scaling, accelerator data concerning multiproduction hadron scaling, and relations between the real and imaginary parts of the forward elastic scattering amplitude in pp collisions are discussed. Experimental cosmic ray data indicate the existence of some new energy-threshold processes of the multiproduction of photons and leptons in hadron interaction at ultra-high energies. The energy threshold of these processes corresponds to 20-30 TeV for nucleon-nucleus collisions and to ∼104 TeV for nucleon-nucleon collisions in the system of the motionless target. It is possible that this property of hadron interaction is connected with the space-time scale of quark hadronization. (R.P.) 12 refs.; 10 figs