''Leading'' particles in proton-nucleus interactions at p0 = 3.1 and 4.5 GeV/c

Inelastic interactions of protons with 3.06 and 4.5 GeV/c pulse with photoemulsion nuclei are investigated. Angular, momentum and transverse momentum distributions are considered for the leading particles (on 85-90% of protons). The angular cut-off effect is estimated for these distributions and for correlations between them. Simple approximations are obtained for the angular and momentum spectra that are useful for investigation of fragmentation of relativistic nuclei. The experimental data at 3.06 and 4.5 GeV/c do not controdict with the supposition on the characteristic identity of the leading particles at these energies and the energies of dozens and hudreds of GeV