2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/44073New data on jet production obtained by the CDF and D0 Collaborations at the Tevatron in Run II are analyzed in the framework of z-scaling. Properties of data z-presentation are discussed. Physics interpretation of the scaling function psi(z) as a probability density to produce a particle with the formation length z is argued. It was shown that these experimental data confirm z-scaling.15 pages, LaTeX, 14 figures, Presented at the XVII International Baldin Seminar on High Energy Physics Problems "Relativistic Nuclear Physics & Quantum Chromodynamics", Dubna, Russia, September 27 - October 2, 2004High Energy Physics - Phenomenologytext