Cumulative hadron production in pA collisions in the framework of z-scaling

Data on cumulative particle production in pA collisions with momentum p L = 18 - 400 G e V / c are analyzed in the z -scaling approach. Scaling function Ψ ( z ) is constructed for different types of target nuclei and inclusive particle angle. The function is expressed via respective inclusive cross section and average multiplicity density of charged particles. This regime corresponds to low z (low transverse momentum p T ). Validity of the concept was verified for this data. A-dependence of the scaling function is studied for low- z region. Self-similarity of hadron production in pA collisions is confirmed over a wide kinematic range.