Self-similarity of high-p sub T hadron production in pi sup - p and pi sup - A collisions

Self-similar properties of hadron production in pi sup - p and pi sup - A collisions over a high-p sub T region are studied. The analysis if experimental data is performed in the framework of z-scaling. The scaling variable depends on the anomalous fractal dimension of the incoming pion. Its value is found to be delta subpi approx = 0.1. Independence of the scaling function PSI(z) on the collision energy is shown. A-dependence of data z-presentation confirms self-similarity of particle formation in pi A collisions