Observation of high energy jets of the relativistic nuclei fragments in nuclear emulsions

A number of experimental and theoretical works which have been focused on the problem of the formation of high density and/or high temperature nuclear matter and ultrarelativistic heavy ion collisions offer the unique opportunity to probe such highly excited abnormal nuclear matter. However, practically all attempts to detect the deconfined quanta of a quark gluon plasma are connected with process of the multiparticle production. But heavy ion experiments have provided the new information on density nuclear matter in form of very narrow jets of fragments of relativistic nuclei. A jet can be defined as a large amount of hadronic energy in a small angular region. Hadronic and fragment jets production in high-energy nucleus-nucleus interaction has become a main tool in investigation of strong interaction physics. The emulsion technique with its superior spatial resolution is very suited for precise angular measurements. The observation of these jets is amenable to an interpretation based on the parton model suggested by Feynman and Gribov