Hadron jets and nucleon clusters in the relativistic nuclear collisions

The production of hadron jets and nucleon clusters has been investigated in different hadron and nuclear reactions over an energy range from 4.0 to 205 GeV. The characteristics of hadron jets and nucleon clusters are studied in terms of a new relativistic invariant approach in a relative four-velocity space. It has been observed that the properties of hadron jets in soft and hard interactions and nucleon clusters with temperature =60-70 MeV are universal, i.e. independent of neither the type of fragmenting system nor collision energy. The asymptotic regime occurs at √S>or approx.6 GeV for hadron jets and at p>or approx.4.2xAxGeV for nucleon clusters. The dependence of cluster temperature on proton multiplicity in the nucleon cluster was obtained. It was also shown that nucleon clusters under consideration can be interpreted as a decay product of multinucleon resonances with a width of about a few MeV. 14 refs.; 10 figs.; 1 tab