Asymptotic properties of high-pT particle production in hadron-hadron, hadron-nucleus and nucleus-nucleus collisions at high energies
The concept of z-scaling reflecting the general features of particle substructure, constituent interaction and mechanism of particle formation is reviewed. Experimental data on the cross sections obtained at ISR, SpS and Tevatron are used in the analysis. The properties of data z-presentation, the energy and angular independencies, the power law, A- and F-dependencies, are discussed. The use of z-scaling to search for new physics phenomena in hadron-hadron, hadron-nucleus and nucleus-nucleus collisions is suggested. The violation of z-scaling characterized by the change of the fractal dimension is considered as a new and complimentary signature of nuclear phase transition.
- Pub Date:
- November 2001
- High Energy Physics - Phenomenology
- 21 pages, LaTeX, 36 figures, Invited talk presented at the 6th International Workshop "Relativistic Nuclear Physics: from Hundreds of MeV to TeV", Varna, Bulgaria, September 10-16, 2001