Abstract

The results of the Tien-Shan investigation on Extensive Air Showers suggest a disappearing fragmentation region in the processes of secondary hadron multiproduction in proton-nucleon collisions at primary cosmic-ray proton energies (1–2)·104TeV. Essential changes in the process of hadron multiproduction with a sharp energy threshold at small distances, ∼3·10−17 cm, mean the production of strongly interacting bosons with masses ≥400 GeV/c2 instead of quark-spectator hadronization. It is possible that such a subquark structure partially changes the characteristics of nucleon-nucleus inelastic collisions in a nucleon energy range 30–100 TeV.

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