CERN Accelerating science

Preprint
Report number	E2-2000-90 ; JINR-E2-2000-90
Title	A-Dependence of $\pi^0$-Meson Production in Proton-Nucleus and Nucleus-Nucleus Collisions at High Energies
Author(s)	Tokarev, M V ; Rogachevski, O V ; Dedovich, T G
Affiliation	(Laboratory of High Energies, Dubna)
Publication	2000
Imprint	20 Apr 2000
Number of pages	18
Presented at	15th International Seminar On High Energy Physics Problems : Relativistic Nuclear Physics and Quantum Chromodynamics, Dubna, Russian Federation, 25 - 29 Sep 2000
Subject category	General Theoretical Physics
Abstract	The A-dependence of pi^0-meson production in proton-nucleus and nucleus-nucleus collisions at a high transverse momentum is studied. The concept of z-scaling reflecting the general features of particle interactions is developed for the description of pi^0-meson production. Experimental data on the cross section obtained at ISR, SpS and Tevatron are usen in the analysis. The A-dependence of scale transformation z to alpha cdot z, psi to alpha^-1 cdot psi is established. An indication of the power law, psi (z) approx z^-beta, at high p_T > 4 GeV/c is found. Based on the properties of z-scaling, the dependence of the cross section of pi^0-mesons produced in pA and AA collisions on transverse momentum over the central rapidity range at RHIC energies is predicted.
Submitted by	[email protected]